256013355 has 16 divisors (see below), whose sum is σ = 441131040. Its totient is φ = 126037248.

The previous prime is 256013341. The next prime is 256013383. The reversal of 256013355 is 553310652.

256013355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256013355 - 2⁴ = 256013339 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656250 + ... + 656639.

It is an arithmetic number, because the mean of its divisors is an integer number (27570690).

Almost surely, 2^256013355 is an apocalyptic number.

256013355 is a deficient number, since it is larger than the sum of its proper divisors (185117685).

256013355 is a wasteful number, since it uses less digits than its factorization.

256013355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312910.

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 256013355 is about 16000.4173383071. The cubic root of 256013355 is about 634.9714621271.

The spelling of 256013355 in words is "two hundred fifty-six million, thirteen thousand, three hundred fifty-five".