57225 has 24 divisors (see below), whose sum is σ = 109120. Its totient is φ = 25920.

The previous prime is 57223. The next prime is 57241. The reversal of 57225 is 52275.

It is not a de Polignac number, because 57225 - 2¹ = 57223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

57225 is a lucky number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (57221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 471 + ... + 579.

2⁵⁷²²⁵ is an apocalyptic number.

It is an amenable number.

57225 is a deficient number, since it is larger than the sum of its proper divisors (51895).

57225 is a wasteful number, since it uses less digits than its factorization.

57225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 124 counting only the distinct ones).

The product of its digits is 700, while the sum is 21.

The square root of 57225 is about 239.2174742781. The cubic root of 57225 is about 38.5355830021.

Subtracting from 57225 its reverse (52275), we obtain a triangular number (4950 = T₉₉).

It can be divided in two parts, 57 and 225, that added together give a palindrome (282).

The spelling of 57225 in words is "fifty-seven thousand, two hundred twenty-five".