256882558 has 4 divisors (see below), whose sum is σ = 385323840. Its totient is φ = 128441278.

The previous prime is 256882553. The next prime is 256882643. The reversal of 256882558 is 855288652.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256882553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64220638 + ... + 64220641.

It is an arithmetic number, because the mean of its divisors is an integer number (96330960).

Almost surely, 2^256882558 is an apocalyptic number.

256882558 is a deficient number, since it is larger than the sum of its proper divisors (128441282).

256882558 is a wasteful number, since it uses less digits than its factorization.

256882558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128441281.

The product of its digits is 1536000, while the sum is 49.

The square root of 256882558 is about 16027.5562079813. The cubic root of 256882558 is about 635.6892575715.

The spelling of 256882558 in words is "two hundred fifty-six million, eight hundred eighty-two thousand, five hundred fifty-eight".