225558 has 16 divisors (see below), whose sum is σ = 501360. Its totient is φ = 75168.

The previous prime is 225529. The next prime is 225569. The reversal of 225558 is 855522.

225558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×225558³ = 34426744783323336, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2035 + ... + 2142.

It is an arithmetic number, because the mean of its divisors is an integer number (31335).

2²²⁵⁵⁵⁸ is an apocalyptic number.

225558 is an abundant number, since it is smaller than the sum of its proper divisors (275802).

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

225558 is a wasteful number, since it uses less digits than its factorization.

225558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4188 (or 4182 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 225558 is about 474.9294684477. The cubic root of 225558 is about 60.8722579850.

The spelling of 225558 in words is "two hundred twenty-five thousand, five hundred fifty-eight".