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125000000000 = 29512
BaseRepresentation
bin111010001101010010…
…1001010001000000000
3102221122110112221001122
41310122211022020000
54022000000000000
6133231343451412
712013421316611
oct1643245121000
9387573487048
10125000000000
1149015272127
12202862b6b68
13ba31045c55
14609b407c08
1533b8e0c085
hex1d1a94a200

125000000000 has 130 divisors (see below), whose sum is σ = 312194823963. Its totient is φ = 50000000000.

The previous prime is 124999999997. The next prime is 125000000003. The reversal of 125000000000 is 521.

The cubic root of 125000000000 is 5000.

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

It is an interprime number because it is at equal distance from previous prime (124999999997) and next prime (125000000003).

It can be written as a sum of positive squares in 7 ways, for example, as 543449344 + 124456550656 = 23312^2 + 352784^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=250000.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125000000003) 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, 24999999998 + ... + 25000000002.

Almost surely, 2125000000000 is an apocalyptic number.

125000000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125000000000

125000000000 is an abundant number, since it is smaller than the sum of its proper divisors (187194823963).

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

125000000000 is an frugal number, since it uses more digits than its factorization.

125000000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 8.

Adding to 125000000000 its reverse (521), we get a palindrome (125000000521).

The spelling of 125000000000 in words is "one hundred twenty-five 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 1250 1280 1600 2000 2500 2560 3125 3200 4000 5000 6250 6400 8000 10000 12500 12800 15625 16000 20000 25000 31250 32000 40000 50000 62500 64000 78125 80000 100000 125000 156250 160000 200000 250000 312500 320000 390625 400000 500000 625000 781250 800000 1000000 1250000 1562500 1600000 1953125 2000000 2500000 3125000 3906250 4000000 5000000 6250000 7812500 8000000 9765625 10000000 12500000 15625000 19531250 20000000 25000000 31250000 39062500 40000000 48828125 50000000 62500000 78125000 97656250 100000000 125000000 156250000 195312500 200000000 244140625 250000000 312500000 390625000 488281250 500000000 625000000 781250000 976562500 1000000000 1250000000 1562500000 1953125000 2500000000 3125000000 3906250000 5000000000 6250000000 7812500000 12500000000 15625000000 25000000000 31250000000 62500000000 125000000000