255569856 has 28 divisors (see below), whose sum is σ = 676195752. Its totient is φ = 85189888.

The previous prime is 255569833. The next prime is 255569863. The reversal of 255569856 is 658965552.

It is a junction number, because it is equal to n+sod(n) for n = 255569799 and 255569808.

It is a congruent number.

It is an unprimeable number.

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, 665355 + ... + 665738.

Almost surely, 2^255569856 is an apocalyptic number.

It is an amenable number.

255569856 is an abundant number, since it is smaller than the sum of its proper divisors (420625896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255569856 is a wasteful number, since it uses less digits than its factorization.

255569856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331108 (or 1331098 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 51.

The square root of 255569856 is about 15986.5523487711. The cubic root of 255569856 is about 634.6045906693.

The spelling of 255569856 in words is "two hundred fifty-five million, five hundred sixty-nine thousand, eight hundred fifty-six".