256886495 has 16 divisors (see below), whose sum is σ = 324920160. Its totient is φ = 194673024.

The previous prime is 256886459. The next prime is 256886501. The reversal of 256886495 is 594688652.

It is a cyclic number.

It is not a de Polignac number, because 256886495 - 2⁸ = 256886239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9029 + ... + 24398.

It is an arithmetic number, because the mean of its divisors is an integer number (20307510).

Almost surely, 2^256886495 is an apocalyptic number.

256886495 is a deficient number, since it is larger than the sum of its proper divisors (68033665).

256886495 is a wasteful number, since it uses less digits than its factorization.

256886495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33514.

The product of its digits is 4147200, while the sum is 53.

The square root of 256886495 is about 16027.6790272329. The cubic root of 256886495 is about 635.6925050942.

The spelling of 256886495 in words is "two hundred fifty-six million, eight hundred eighty-six thousand, four hundred ninety-five".