256523254 has 16 divisors (see below), whose sum is σ = 414757728. Its totient is φ = 118288512.

The previous prime is 256523231. The next prime is 256523261. The reversal of 256523254 is 452325652.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29919 + ... + 37525.

It is an arithmetic number, because the mean of its divisors is an integer number (25922358).

Almost surely, 2^256523254 is an apocalyptic number.

256523254 is a deficient number, since it is larger than the sum of its proper divisors (158234474).

256523254 is a wasteful number, since it uses less digits than its factorization.

256523254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8919.

The product of its digits is 72000, while the sum is 34.

The square root of 256523254 is about 16016.3433404757. The cubic root of 256523254 is about 635.3927378069.

The spelling of 256523254 in words is "two hundred fifty-six million, five hundred twenty-three thousand, two hundred fifty-four".