225145992 has 16 divisors (see below), whose sum is σ = 562865040. Its totient is φ = 75048656.

The previous prime is 225145951. The next prime is 225146039. The reversal of 225145992 is 299541522.

225145992 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 225145992.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4690518 + ... + 4690565.

It is an arithmetic number, because the mean of its divisors is an integer number (35179065).

Almost surely, 2^225145992 is an apocalyptic number.

It is an amenable number.

225145992 is an abundant number, since it is smaller than the sum of its proper divisors (337719048).

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

225145992 is a wasteful number, since it uses less digits than its factorization.

225145992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9381092 (or 9381088 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 225145992 is about 15004.8656108610. The cubic root of 225145992 is about 608.3517196836.

The spelling of 225145992 in words is "two hundred twenty-five million, one hundred forty-five thousand, nine hundred ninety-two".