225772636 has 12 divisors (see below), whose sum is σ = 395300080. Its totient is φ = 112829760.

The previous prime is 225772607. The next prime is 225772639. The reversal of 225772636 is 636277522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225772639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4416 + ... + 21703.

Almost surely, 2^225772636 is an apocalyptic number.

It is an amenable number.

225772636 is a deficient number, since it is larger than the sum of its proper divisors (169527444).

225772636 is a wasteful number, since it uses less digits than its factorization.

225772636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28284 (or 28282 counting only the distinct ones).

The product of its digits is 211680, while the sum is 40.

The square root of 225772636 is about 15025.7324613478. The cubic root of 225772636 is about 608.9156009488.

The spelling of 225772636 in words is "two hundred twenty-five million, seven hundred seventy-two thousand, six hundred thirty-six".