255961512 has 64 divisors (see below), whose sum is σ = 715041600. Its totient is φ = 84836160.

The previous prime is 255961493. The next prime is 255961543. The reversal of 255961512 is 215169552.

255961512 is a `hidden beast` number, since 2 + 55 + 96 + 1 + 512 = 666.

It is a super-2 number, since 2×255961512² = 131032591250652288, which contains 22 as substring.

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

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 15 ways as a sum of consecutive naturals, for example, 35823 + ... + 42369.

It is an arithmetic number, because the mean of its divisors is an integer number (11172525).

Almost surely, 2^255961512 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 255961512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357520800).

255961512 is an abundant number, since it is smaller than the sum of its proper divisors (459080088).

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

255961512 is a wasteful number, since it uses less digits than its factorization.

255961512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6743 (or 6733 counting only the distinct ones).

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

The square root of 255961512 is about 15998.7972047901. The cubic root of 255961512 is about 634.9285984155.

The spelling of 255961512 in words is "two hundred fifty-five million, nine hundred sixty-one thousand, five hundred twelve".