256572057250 has 16 divisors (see below), whose sum is σ = 480302891640. Its totient is φ = 102628822800.

The previous prime is 256572057223. The next prime is 256572057257. The reversal of 256572057250 is 52750275652.

It can be written as a sum of positive squares in 4 ways, for example, as 98286639049 + 158285418201 = 313507^2 + 397851^2 .

It is a super-2 number, since 2×256572057250² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 256572057250.

It is not an unprimeable number, because it can be changed into a prime (256572057257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513143865 + ... + 513144364.

Almost surely, 2^256572057250 is an apocalyptic number.

256572057250 is a deficient number, since it is larger than the sum of its proper divisors (223730834390).

256572057250 is a wasteful number, since it uses less digits than its factorization.

256572057250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026288246 (or 1026288236 counting only the distinct ones).

The product of its (nonzero) digits is 1470000, while the sum is 46.

The spelling of 256572057250 in words is "two hundred fifty-six billion, five hundred seventy-two million, fifty-seven thousand, two hundred fifty".