225520204 has 24 divisors (see below), whose sum is σ = 485736608. Its totient is φ = 89216640.

The previous prime is 225520201. The next prime is 225520219. The reversal of 225520204 is 402025522.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (225520201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309417 + ... + 310144.

Almost surely, 2^225520204 is an apocalyptic number.

It is an amenable number.

225520204 is an abundant number, since it is smaller than the sum of its proper divisors (260216404).

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

225520204 is a wasteful number, since it uses less digits than its factorization.

225520204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619585 (or 619583 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 225520204 is about 15017.3301222288. The cubic root of 225520204 is about 608.6885774147.

Adding to 225520204 its reverse (402025522), we get a palindrome (627545726).

The spelling of 225520204 in words is "two hundred twenty-five million, five hundred twenty thousand, two hundred four".