255256560 has 120 divisors (see below), whose sum is σ = 923211744. Its totient is φ = 62830080.

The previous prime is 255256559. The next prime is 255256571. The reversal of 255256560 is 65652552.

255256560 is a `hidden beast` number, since 2 + 552 + 56 + 56 + 0 = 666.

255256560 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×255256560² = 130311822846067200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4276 + ... + 22995.

Almost surely, 2^255256560 is an apocalyptic number.

255256560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255256560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461605872).

255256560 is an abundant number, since it is smaller than the sum of its proper divisors (667955184).

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

255256560 is a wasteful number, since it uses less digits than its factorization.

255256560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27303 (or 27294 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 255256560 is about 15976.7506083058. The cubic root of 255256560 is about 634.3451699110.

The spelling of 255256560 in words is "two hundred fifty-five million, two hundred fifty-six thousand, five hundred sixty".