256159256 has 16 divisors (see below), whose sum is σ = 491469000. Its totient is φ = 125100864.

The previous prime is 256159199. The next prime is 256159261. The reversal of 256159256 is 652951652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371981 + ... + 372668.

Almost surely, 2^256159256 is an apocalyptic number.

It is an amenable number.

256159256 is a deficient number, since it is larger than the sum of its proper divisors (235309744).

256159256 is a wasteful number, since it uses less digits than its factorization.

256159256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744698 (or 744694 counting only the distinct ones).

The product of its digits is 162000, while the sum is 41.

The square root of 256159256 is about 16004.9759762394. The cubic root of 256159256 is about 635.0920617965.

The spelling of 256159256 in words is "two hundred fifty-six million, one hundred fifty-nine thousand, two hundred fifty-six".