256125757356 has 72 divisors (see below), whose sum is σ = 743674932000. Its totient is φ = 72807307776.

The previous prime is 256125757351. The next prime is 256125757367. The reversal of 256125757356 is 653757521652.

256125757356 is a `hidden beast` number, since 2 + 5 + 6 + 12 + 5 + 7 + 573 + 56 = 666.

It is a super-2 number, since 2×256125757356² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256125757351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2529981 + ... + 2629268.

It is an arithmetic number, because the mean of its divisors is an integer number (10328818500).

Almost surely, 2^256125757356 is an apocalyptic number.

It is an amenable number.

256125757356 is an abundant number, since it is smaller than the sum of its proper divisors (487549174644).

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

256125757356 is a wasteful number, since it uses less digits than its factorization.

256125757356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159463 (or 5159458 counting only the distinct ones).

The product of its digits is 13230000, while the sum is 54.

The spelling of 256125757356 in words is "two hundred fifty-six billion, one hundred twenty-five million, seven hundred fifty-seven thousand, three hundred fifty-six".