225213732 has 18 divisors (see below), whose sum is σ = 569290358. Its totient is φ = 75071232.

The previous prime is 225213719. The next prime is 225213761. The reversal of 225213732 is 237312522.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 224280576 + 933156 = 14976^2 + 966^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 225213696 and 225213705.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3127933 + ... + 3128004.

Almost surely, 2^225213732 is an apocalyptic number.

It is an amenable number.

225213732 is an abundant number, since it is smaller than the sum of its proper divisors (344076626).

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

225213732 is a wasteful number, since it uses less digits than its factorization.

225213732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6255947 (or 6255942 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 225213732 is about 15007.1227089006. The cubic root of 225213732 is about 608.4127254528.

The spelling of 225213732 in words is "two hundred twenty-five million, two hundred thirteen thousand, seven hundred thirty-two".