225517272 has 16 divisors (see below), whose sum is σ = 563793240. Its totient is φ = 75172416.

The previous prime is 225517249. The next prime is 225517273. The reversal of 225517272 is 272715522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225517273) 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, 4698253 + ... + 4698300.

Almost surely, 2^225517272 is an apocalyptic number.

It is an amenable number.

225517272 is an abundant number, since it is smaller than the sum of its proper divisors (338275968).

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

225517272 is a wasteful number, since it uses less digits than its factorization.

225517272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9396562 (or 9396558 counting only the distinct ones).

The product of its digits is 19600, while the sum is 33.

The square root of 225517272 is about 15017.2325013632. The cubic root of 225517272 is about 608.6859395392.

The spelling of 225517272 in words is "two hundred twenty-five million, five hundred seventeen thousand, two hundred seventy-two".