255911256 has 48 divisors (see below), whose sum is σ = 697538400. Its totient is φ = 84756672.

The previous prime is 255911219. The next prime is 255911263. The reversal of 255911256 is 652119552.

255911256 is a `hidden beast` number, since 2 + 5 + 591 + 12 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 255911256.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16 + ... + 22623.

It is an arithmetic number, because the mean of its divisors is an integer number (14532050).

Almost surely, 2^255911256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255911256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348769200).

255911256 is an abundant number, since it is smaller than the sum of its proper divisors (441627144).

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

255911256 is a wasteful number, since it uses less digits than its factorization.

255911256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22808 (or 22801 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 255911256 is about 15997.2265096172. The cubic root of 255911256 is about 634.8870413080.

The spelling of 255911256 in words is "two hundred fifty-five million, nine hundred eleven thousand, two hundred fifty-six".