255989610 has 24 divisors (see below), whose sum is σ = 665573220. Its totient is φ = 68263872.

The previous prime is 255989593. The next prime is 255989633. The reversal of 255989610 is 16989552.

255989610 is a `hidden beast` number, since 2 + 559 + 8 + 96 + 1 + 0 = 666.

255989610 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 255968001 + 21609 = 15999^2 + 147^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1422075 + ... + 1422254.

Almost surely, 2^255989610 is an apocalyptic number.

255989610 is an abundant number, since it is smaller than the sum of its proper divisors (409583610).

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

255989610 is a wasteful number, since it uses less digits than its factorization.

255989610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844342 (or 2844339 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 255989610 is about 15999.6753092055. The cubic root of 255989610 is about 634.9518305164.

The spelling of 255989610 in words is "two hundred fifty-five million, nine hundred eighty-nine thousand, six hundred ten".