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.