256882511 has 4 divisors (see below), whose sum is σ = 256977024. Its totient is φ = 256788000.

The previous prime is 256882501. The next prime is 256882517. The reversal of 256882511 is 115288652.

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 256882511 - 2¹⁸ = 256620367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256882517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43055 + ... + 48656.

It is an arithmetic number, because the mean of its divisors is an integer number (64244256).

Almost surely, 2^256882511 is an apocalyptic number.

256882511 is a deficient number, since it is larger than the sum of its proper divisors (94513).

256882511 is an equidigital number, since it uses as much as digits as its factorization.

256882511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94512.

The product of its digits is 38400, while the sum is 38.

The square root of 256882511 is about 16027.5547417565. The cubic root of 256882511 is about 635.6892188023.

The spelling of 256882511 in words is "two hundred fifty-six million, eight hundred eighty-two thousand, five hundred eleven".