256521262532112 has 30 divisors (see below), whose sum is σ = 717903255559022. Its totient is φ = 85507087510656.

The previous prime is 256521262532077. The next prime is 256521262532137. The reversal of 256521262532112 is 211235262125652.

256521262532112 is a `hidden beast` number, since 2 + 5 + 6 + 5 + 2 + 1 + 2 + 625 + 3 + 2 + 1 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 167778758267136 + 88742504264976 = 12952944^2 + 9420324^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 890698828093 + ... + 890698828380.

Almost surely, 2^{256521262532112} is an apocalyptic number.

It is an amenable number.

256521262532112 is an abundant number, since it is smaller than the sum of its proper divisors (461381993026910).

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

256521262532112 is a wasteful number, since it uses less digits than its factorization.

256521262532112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781397656487 (or 1781397656478 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The spelling of 256521262532112 in words is "two hundred fifty-six trillion, five hundred twenty-one billion, two hundred sixty-two million, five hundred thirty-two thousand, one hundred twelve".