225520044 has 24 divisors (see below), whose sum is σ = 553909440. Its totient is φ = 71216784.

The previous prime is 225520039. The next prime is 225520073. The reversal of 225520044 is 440025522.

It is a happy number.

225520044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 225519996 and 225520023.

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, 494334 + ... + 494789.

It is an arithmetic number, because the mean of its divisors is an integer number (23079560).

Almost surely, 2^225520044 is an apocalyptic number.

It is an amenable number.

225520044 is an abundant number, since it is smaller than the sum of its proper divisors (328389396).

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

225520044 is a wasteful number, since it uses less digits than its factorization.

225520044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989149 (or 989147 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 225520044 is about 15017.3247950492. The cubic root of 225520044 is about 608.6884334657.

Adding to 225520044 its reverse (440025522), we get a palindrome (665545566).

The spelling of 225520044 in words is "two hundred twenty-five million, five hundred twenty thousand, forty-four".