225560 has 16 divisors (see below), whose sum is σ = 507600. Its totient is φ = 90208.

The previous prime is 225529. The next prime is 225569. The reversal of 225560 is 65522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225569) by changing a digit.

225560 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, 2780 + ... + 2859.

It is an arithmetic number, because the mean of its divisors is an integer number (31725).

2²²⁵⁵⁶⁰ is an apocalyptic number.

225560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225560 is an abundant number, since it is smaller than the sum of its proper divisors (282040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225560 is a wasteful number, since it uses less digits than its factorization.

225560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5650 (or 5646 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 225560 is about 474.9315740188. The cubic root of 225560 is about 60.8724379005.

The spelling of 225560 in words is "two hundred twenty-five thousand, five hundred sixty".