256413522 has 32 divisors (see below), whose sum is σ = 542475648. Its totient is φ = 80631936.

The previous prime is 256413503. The next prime is 256413551. The reversal of 256413522 is 225314652.

256413522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 256413522.

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, 2653 + ... + 22800.

It is an arithmetic number, because the mean of its divisors is an integer number (16952364).

Almost surely, 2^256413522 is an apocalyptic number.

256413522 is an abundant number, since it is smaller than the sum of its proper divisors (286062126).

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

256413522 is a wasteful number, since it uses less digits than its factorization.

256413522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25554.

The product of its digits is 14400, while the sum is 30.

The square root of 256413522 is about 16012.9173481911. The cubic root of 256413522 is about 635.3021250211.

The spelling of 256413522 in words is "two hundred fifty-six million, four hundred thirteen thousand, five hundred twenty-two".