225167728 has 10 divisors (see below), whose sum is σ = 436262504. Its totient is φ = 112583856.

The previous prime is 225167717. The next prime is 225167729. The reversal of 225167728 is 827761522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225167729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7036476 + ... + 7036507.

Almost surely, 2^225167728 is an apocalyptic number.

It is an amenable number.

225167728 is a deficient number, since it is larger than the sum of its proper divisors (211094776).

225167728 is a wasteful number, since it uses less digits than its factorization.

225167728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14072991 (or 14072985 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 225167728 is about 15005.5898917703. The cubic root of 225167728 is about 608.3712961776.

The spelling of 225167728 in words is "two hundred twenty-five million, one hundred sixty-seven thousand, seven hundred twenty-eight".