225530 has 16 divisors (see below), whose sum is σ = 427680. Its totient is φ = 85392.

The previous prime is 225529. The next prime is 225569. The reversal of 225530 is 35522.

225530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 225499 and 225508.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 404 + ... + 783.

It is an arithmetic number, because the mean of its divisors is an integer number (26730).

2²²⁵⁵³⁰ is an apocalyptic number.

225530 is a deficient number, since it is larger than the sum of its proper divisors (202150).

225530 is a wasteful number, since it uses less digits than its factorization.

225530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 225530 is about 474.8999894715. The cubic root of 225530 is about 60.8697390560.

The spelling of 225530 in words is "two hundred twenty-five thousand, five hundred thirty".