225120330 has 64 divisors (see below), whose sum is σ = 621043200. Its totient is φ = 57960000.

The previous prime is 225120289. The next prime is 225120347. The reversal of 225120330 is 33021522.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6546 + ... + 22205.

It is an arithmetic number, because the mean of its divisors is an integer number (9703800).

Almost surely, 2^225120330 is an apocalyptic number.

225120330 is an abundant number, since it is smaller than the sum of its proper divisors (395922870).

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

225120330 is a wasteful number, since it uses less digits than its factorization.

225120330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28796 (or 28790 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 225120330 is about 15004.0104638727. The cubic root of 225120330 is about 608.3286056220.

Adding to 225120330 its reverse (33021522), we get a palindrome (258141852).

The spelling of 225120330 in words is "two hundred twenty-five million, one hundred twenty thousand, three hundred thirty".