255625 has 10 divisors (see below), whose sum is σ = 320210. Its totient is φ = 204000.

The previous prime is 255617. The next prime is 255637. The reversal of 255625 is 526552.

It can be written as a sum of positive squares in 5 ways, for example, as 44944 + 210681 = 212^2 + 459^2 .

It is not a de Polignac number, because 255625 - 2³ = 255617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 255625.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 421 + ... + 829.

It is an arithmetic number, because the mean of its divisors is an integer number (32021).

2²⁵⁵⁶²⁵ is an apocalyptic number.

255625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255625 is a deficient number, since it is larger than the sum of its proper divisors (64585).

255625 is an frugal number, since it uses more digits than its factorization.

255625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 414 counting only the distinct ones).

The product of its digits is 3000, while the sum is 25.

The square root of 255625 is about 505.5937104039. The cubic root of 255625 is about 63.4650230010.

It can be divided in two parts, 25 and 5625, that multiplied together give a square (140625 = 375²).

The spelling of 255625 in words is "two hundred fifty-five thousand, six hundred twenty-five".