256717882675 has 6 divisors (see below), whose sum is σ = 318330174548. Its totient is φ = 205374306120.

The previous prime is 256717882639. The next prime is 256717882711. The reversal of 256717882675 is 576288717652.

It is an interprime number because it is at equal distance from previous prime (256717882639) and next prime (256717882711).

It is not a de Polignac number, because 256717882675 - 2⁹ = 256717882163 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5134357629 + ... + 5134357678.

Almost surely, 2^256717882675 is an apocalyptic number.

256717882675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256717882675 is a deficient number, since it is larger than the sum of its proper divisors (61612291873).

256717882675 is a wasteful number, since it uses less digits than its factorization.

256717882675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10268715317 (or 10268715312 counting only the distinct ones).

The product of its digits is 79027200, while the sum is 64.

The spelling of 256717882675 in words is "two hundred fifty-six billion, seven hundred seventeen million, eight hundred eighty-two thousand, six hundred seventy-five".