225523730 has 32 divisors (see below), whose sum is σ = 428276160. Its totient is φ = 85268160.

The previous prime is 225523721. The next prime is 225523733. The reversal of 225523730 is 37325522.

It is a happy number.

It is a super-2 number, since 2×225523730² = 101721905586225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225523693 and 225523702.

It is not an unprimeable number, because it can be changed into a prime (225523733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104765 + ... + 106895.

It is an arithmetic number, because the mean of its divisors is an integer number (13383630).

Almost surely, 2^225523730 is an apocalyptic number.

225523730 is a deficient number, since it is larger than the sum of its proper divisors (202752430).

225523730 is a wasteful number, since it uses less digits than its factorization.

225523730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 225523730 is about 15017.4475194688. The cubic root of 225523730 is about 608.6917496726.

The spelling of 225523730 in words is "two hundred twenty-five million, five hundred twenty-three thousand, seven hundred thirty".