225296628 has 12 divisors (see below), whose sum is σ = 525692160. Its totient is φ = 75098872.

The previous prime is 225296609. The next prime is 225296629. The reversal of 225296628 is 826692522.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 225296628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225296629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9387348 + ... + 9387371.

It is an arithmetic number, because the mean of its divisors is an integer number (43807680).

Almost surely, 2^225296628 is an apocalyptic number.

It is an amenable number.

225296628 is an abundant number, since it is smaller than the sum of its proper divisors (300395532).

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

225296628 is a wasteful number, since it uses less digits than its factorization.

225296628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18774726 (or 18774724 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 225296628 is about 15009.8843433252. The cubic root of 225296628 is about 608.4873638775.

The spelling of 225296628 in words is "two hundred twenty-five million, two hundred ninety-six thousand, six hundred twenty-eight".