225525 has 24 divisors (see below), whose sum is σ = 388864. Its totient is φ = 115200.

The previous prime is 225523. The next prime is 225527. The reversal of 225525 is 525522.

It is an interprime number because it is at equal distance from previous prime (225523) and next prime (225527).

It is not a de Polignac number, because 225525 - 2¹ = 225523 is a prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 225525.

It is not an unprimeable number, because it can be changed into a prime (225523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2277 + ... + 2373.

2²²⁵⁵²⁵ is an apocalyptic number.

225525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225525 is a deficient number, since it is larger than the sum of its proper divisors (163339).

225525 is a wasteful number, since it uses less digits than its factorization.

225525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 136 counting only the distinct ones).

The product of its digits is 1000, while the sum is 21.

The square root of 225525 is about 474.8947251760. The cubic root of 225525 is about 60.8692892253.

The spelling of 225525 in words is "two hundred twenty-five thousand, five hundred twenty-five".