256017625734 has 32 divisors (see below), whose sum is σ = 551655546624. Its totient is φ = 78741372960.

The previous prime is 256017625733. The next prime is 256017625771. The reversal of 256017625734 is 437526710652.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256017625733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507234 + ... + 877109.

It is an arithmetic number, because the mean of its divisors is an integer number (17239235832).

Almost surely, 2^256017625734 is an apocalyptic number.

256017625734 is an abundant number, since it is smaller than the sum of its proper divisors (295637920890).

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

256017625734 is a wasteful number, since it uses less digits than its factorization.

256017625734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386732.

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 256017625734 in words is "two hundred fifty-six billion, seventeen million, six hundred twenty-five thousand, seven hundred thirty-four".