225521692 has 12 divisors (see below), whose sum is σ = 430541496. Its totient is φ = 102509840.

The previous prime is 225521687. The next prime is 225521717. The reversal of 225521692 is 296125522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2562703 + ... + 2562790.

It is an arithmetic number, because the mean of its divisors is an integer number (35878458).

Almost surely, 2^225521692 is an apocalyptic number.

225521692 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

225521692 is a deficient number, since it is larger than the sum of its proper divisors (205019804).

225521692 is a wasteful number, since it uses less digits than its factorization.

225521692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125508 (or 5125506 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 225521692 is about 15017.3796649083. The cubic root of 225521692 is about 608.6899161367.

The spelling of 225521692 in words is "two hundred twenty-five million, five hundred twenty-one thousand, six hundred ninety-two".