256265956 has 12 divisors (see below), whose sum is σ = 474845868. Its totient is φ = 120595712.

The previous prime is 256265927. The next prime is 256265993. The reversal of 256265956 is 659562652.

It can be written as a sum of positive squares in 2 ways, for example, as 71740900 + 184525056 = 8470^2 + 13584^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1884241 + ... + 1884376.

It is an arithmetic number, because the mean of its divisors is an integer number (39570489).

Almost surely, 2^256265956 is an apocalyptic number.

It is an amenable number.

256265956 is a deficient number, since it is larger than the sum of its proper divisors (218579912).

256265956 is a wasteful number, since it uses less digits than its factorization.

256265956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768638 (or 3768636 counting only the distinct ones).

The product of its digits is 972000, while the sum is 46.

The square root of 256265956 is about 16008.3089675331. The cubic root of 256265956 is about 635.1802294952.

The spelling of 256265956 in words is "two hundred fifty-six million, two hundred sixty-five thousand, nine hundred fifty-six".