256625912 has 16 divisors (see below), whose sum is σ = 481677840. Its totient is φ = 128178496.

The previous prime is 256625909. The next prime is 256625921. The reversal of 256625912 is 219526652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8453 + ... + 24180.

It is an arithmetic number, because the mean of its divisors is an integer number (30104865).

Almost surely, 2^256625912 is an apocalyptic number.

It is an amenable number.

256625912 is a deficient number, since it is larger than the sum of its proper divisors (225051928).

256625912 is a wasteful number, since it uses less digits than its factorization.

256625912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33622 (or 33618 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 256625912 is about 16019.5478088490. The cubic root of 256625912 is about 635.4774857422.

The spelling of 256625912 in words is "two hundred fifty-six million, six hundred twenty-five thousand, nine hundred twelve".