225725 has 6 divisors (see below), whose sum is σ = 279930. Its totient is φ = 180560.

The previous prime is 225721. The next prime is 225733. The reversal of 225725 is 527522.

It can be written as a sum of positive squares in 3 ways, for example, as 76729 + 148996 = 277^2 + 386^2 .

It is not a de Polignac number, because 225725 - 2² = 225721 is a prime.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 225725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4490 + ... + 4539.

It is an arithmetic number, because the mean of its divisors is an integer number (46655).

2²²⁵⁷²⁵ is an apocalyptic number.

225725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225725 is a deficient number, since it is larger than the sum of its proper divisors (54205).

225725 is an equidigital number, since it uses as much as digits as its factorization.

225725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9039 (or 9034 counting only the distinct ones).

The product of its digits is 1400, while the sum is 23.

The square root of 225725 is about 475.1052514970. The cubic root of 225725 is about 60.8872772694.

The spelling of 225725 in words is "two hundred twenty-five thousand, seven hundred twenty-five".