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250000000000 = 210512
BaseRepresentation
bin1110100011010100101…
…0010100010000000000
3212220021221002212010021
43220311022110100000
513044000000000000
6310503131343224
724030142636522
oct3506512242000
9786257085107
10250000000000
119702a534253
12405505b1b14
131a76208bbaa
14c158811a12
156782d1911a
hex3a35294400

250000000000 has 143 divisors (see below), whose sum is σ = 624694823707. Its totient is φ = 100000000000.

The previous prime is 249999999973. The next prime is 250000000007. The reversal of 250000000000 is 52.

Adding to 250000000000 its reverse (52), we get a palindrome (250000000052).

It can be divided in two parts, 2 and 50000000000, that multiplied together give a 11-th power (100000000000 = 1011).

The square root of 250000000000 is 500000.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 6 ways, for example, as 141448201216 + 108551798784 = 376096^2 + 329472^2 .

It is a sliding number, since 250000000000 = 50000000000 + 200000000000 and 1/50000000000 + 1/200000000000 = 0.0000000000250000000000.

It is an ABA number since it can be written as A⋅BA, here for A=4, B=500.

It is a hoax number, since the sum of its digits (7) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an enlightened number because it begins with the concatenation of its prime factors (25).

It is not an unprimeable number, because it can be changed into a prime (250000000007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 12 ways as a sum of consecutive naturals, for example, 49999999998 + ... + 50000000002.

Almost surely, 2250000000000 is an apocalyptic number.

250000000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

250000000000 is the 500000-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250000000000

250000000000 is an abundant number, since it is smaller than the sum of its proper divisors (374694823707).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

250000000000 is an frugal number, since it uses more digits than its factorization.

250000000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 7.

The spelling of 250000000000 in words is "two hundred fifty billion", and thus it is an aban number.

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 500 512 625 640 800 1000 1024 1250 1280 1600 2000 2500 2560 3125 3200 4000 5000 5120 6250 6400 8000 10000 12500 12800 15625 16000 20000 25000 25600 31250 32000 40000 50000 62500 64000 78125 80000 100000 125000 128000 156250 160000 200000 250000 312500 320000 390625 400000 500000 625000 640000 781250 800000 1000000 1250000 1562500 1600000 1953125 2000000 2500000 3125000 3200000 3906250 4000000 5000000 6250000 7812500 8000000 9765625 10000000 12500000 15625000 16000000 19531250 20000000 25000000 31250000 39062500 40000000 48828125 50000000 62500000 78125000 80000000 97656250 100000000 125000000 156250000 195312500 200000000 244140625 250000000 312500000 390625000 400000000 488281250 500000000 625000000 781250000 976562500 1000000000 1250000000 1562500000 1953125000 2000000000 2500000000 3125000000 3906250000 5000000000 6250000000 7812500000 10000000000 12500000000 15625000000 25000000000 31250000000 50000000000 62500000000 125000000000 250000000000