256272859 has 4 divisors (see below), whose sum is σ = 256320400. Its totient is φ = 256225320.

The previous prime is 256272829. The next prime is 256272869. The reversal of 256272859 is 958272652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256272859 - 2²⁵ = 222718427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256272829) by changing a digit.

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, 14472 + ... + 26869.

It is an arithmetic number, because the mean of its divisors is an integer number (64080100).

Almost surely, 2^256272859 is an apocalyptic number.

256272859 is a deficient number, since it is larger than the sum of its proper divisors (47541).

256272859 is an equidigital number, since it uses as much as digits as its factorization.

256272859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47540.

The product of its digits is 604800, while the sum is 46.

The square root of 256272859 is about 16008.5245728643. The cubic root of 256272859 is about 635.1859326975.

The spelling of 256272859 in words is "two hundred fifty-six million, two hundred seventy-two thousand, eight hundred fifty-nine".