255868488 has 24 divisors (see below), whose sum is σ = 692977350. Its totient is φ = 85289472.

The previous prime is 255868477. The next prime is 255868493. The reversal of 255868488 is 884868552.

It is a happy number.

255868488 is a `hidden beast` number, since 2 + 558 + 6 + 8 + 4 + 88 = 666.

It can be written as a sum of positive squares in only one way, i.e., 190937124 + 64931364 = 13818^2 + 8058^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×255868488² = 130937366302812288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1776793 + ... + 1776936.

Almost surely, 2^255868488 is an apocalyptic number.

It is an amenable number.

255868488 is an abundant number, since it is smaller than the sum of its proper divisors (437108862).

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

255868488 is a wasteful number, since it uses less digits than its factorization.

255868488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553741 (or 3553734 counting only the distinct ones).

The product of its digits is 4915200, while the sum is 54.

The square root of 255868488 is about 15995.8897220505. The cubic root of 255868488 is about 634.8516718051.

The spelling of 255868488 in words is "two hundred fifty-five million, eight hundred sixty-eight thousand, four hundred eighty-eight".