256025266 has 32 divisors (see below), whose sum is σ = 462965760. Its totient is φ = 103733136.

The previous prime is 256025257. The next prime is 256025317. The reversal of 256025266 is 662520652.

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 15 ways as a sum of consecutive naturals, for example, 208731 + ... + 209953.

It is an arithmetic number, because the mean of its divisors is an integer number (14467680).

Almost surely, 2^256025266 is an apocalyptic number.

256025266 is a deficient number, since it is larger than the sum of its proper divisors (206940494).

256025266 is a wasteful number, since it uses less digits than its factorization.

256025266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 256025266 is about 16000.7895430194. The cubic root of 256025266 is about 634.9813093058.

The spelling of 256025266 in words is "two hundred fifty-six million, twenty-five thousand, two hundred sixty-six".