256253445432 has 24 divisors (see below), whose sum is σ = 694019748240. Its totient is φ = 85417815120.

The previous prime is 256253445431. The next prime is 256253445433. The reversal of 256253445432 is 234544352652.

256253445432 is a `hidden beast` number, since 2 + 5 + 62 + 5 + 3 + 44 + 543 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (256253445431) and next prime (256253445433).

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256253445431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1779537744 + ... + 1779537887.

It is an arithmetic number, because the mean of its divisors is an integer number (28917489510).

Almost surely, 2^256253445432 is an apocalyptic number.

It is an amenable number.

256253445432 is an abundant number, since it is smaller than the sum of its proper divisors (437766302808).

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

256253445432 is a wasteful number, since it uses less digits than its factorization.

256253445432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559075643 (or 3559075636 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 45.

The spelling of 256253445432 in words is "two hundred fifty-six billion, two hundred fifty-three million, four hundred forty-five thousand, four hundred thirty-two".