225645225636 has 24 divisors (see below), whose sum is σ = 526548929760. Its totient is φ = 75208874752.

The previous prime is 225645225581. The next prime is 225645225643. The reversal of 225645225636 is 636522546522.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622221 + ... + 915668.

It is an arithmetic number, because the mean of its divisors is an integer number (21939538740).

Almost surely, 2^225645225636 is an apocalyptic number.

It is an amenable number.

225645225636 is an abundant number, since it is smaller than the sum of its proper divisors (300903704124).

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

225645225636 is a wasteful number, since it uses less digits than its factorization.

225645225636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550123 (or 1550121 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 48.

The spelling of 225645225636 in words is "two hundred twenty-five billion, six hundred forty-five million, two hundred twenty-five thousand, six hundred thirty-six".