255812 has 12 divisors (see below), whose sum is σ = 462336. Its totient is φ = 123720.

The previous prime is 255803. The next prime is 255839. The reversal of 255812 is 218552.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255812.

It is an unprimeable number.

255812 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 908 + ... + 1155.

It is an arithmetic number, because the mean of its divisors is an integer number (38528).

2²⁵⁵⁸¹² is an apocalyptic number.

It is an amenable number.

255812 is a deficient number, since it is larger than the sum of its proper divisors (206524).

255812 is a wasteful number, since it uses less digits than its factorization.

255812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098 (or 2096 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 255812 is about 505.7786076931. The cubic root of 255812 is about 63.4804949703.

The spelling of 255812 in words is "two hundred fifty-five thousand, eight hundred twelve".