225632730 has 32 divisors (see below), whose sum is σ = 543801600. Its totient is φ = 59915072.

The previous prime is 225632699. The next prime is 225632741. The reversal of 225632730 is 37236522.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8565 + ... + 22904.

It is an arithmetic number, because the mean of its divisors is an integer number (16993800).

Almost surely, 2^225632730 is an apocalyptic number.

225632730 is an abundant number, since it is smaller than the sum of its proper divisors (318168870).

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

225632730 is a wasteful number, since it uses less digits than its factorization.

225632730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31718.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 225632730 is about 15021.0761931361. The cubic root of 225632730 is about 608.7897980606.

The spelling of 225632730 in words is "two hundred twenty-five million, six hundred thirty-two thousand, seven hundred thirty".