225129612 has 24 divisors (see below), whose sum is σ = 548142336. Its totient is φ = 71780368.

The previous prime is 225129607. The next prime is 225129629. The reversal of 225129612 is 216921522.

225129612 is digitally balanced in base 2, because in such base 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 225129612.

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, 407568 + ... + 408119.

It is an arithmetic number, because the mean of its divisors is an integer number (22839264).

Almost surely, 2^225129612 is an apocalyptic number.

It is an amenable number.

225129612 is an abundant number, since it is smaller than the sum of its proper divisors (323012724).

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

225129612 is a wasteful number, since it uses less digits than its factorization.

225129612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815717 (or 815715 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 225129612 is about 15004.3197779839. The cubic root of 225129612 is about 608.3369662301.

The spelling of 225129612 in words is "two hundred twenty-five million, one hundred twenty-nine thousand, six hundred twelve".