225319724 has 12 divisors (see below), whose sum is σ = 450639504. Its totient is φ = 96565584.

The previous prime is 225319709. The next prime is 225319733. The reversal of 225319724 is 427913522.

It is a happy number.

225319724 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 4023539 + ... + 4023594.

It is an arithmetic number, because the mean of its divisors is an integer number (37553292).

Almost surely, 2^225319724 is an apocalyptic number.

It is an amenable number.

225319724 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

225319724 is a wasteful number, since it uses less digits than its factorization.

225319724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8047144 (or 8047142 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 225319724 is about 15010.6536833011. The cubic root of 225319724 is about 608.5081559389.

The spelling of 225319724 in words is "two hundred twenty-five million, three hundred nineteen thousand, seven hundred twenty-four".