225737989992 has 32 divisors (see below), whose sum is σ = 627049972800. Its totient is φ = 75245996592.

The previous prime is 225737989943. The next prime is 225737989999. The reversal of 225737989992 is 299989737522.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 225737989992.

It is not an unprimeable number, because it can be changed into a prime (225737989999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522541428 + ... + 522541859.

It is an arithmetic number, because the mean of its divisors is an integer number (19595311650).

Almost surely, 2^225737989992 is an apocalyptic number.

It is an amenable number.

225737989992 is an abundant number, since it is smaller than the sum of its proper divisors (401311982808).

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

225737989992 is a wasteful number, since it uses less digits than its factorization.

225737989992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045083302 (or 1045083292 counting only the distinct ones).

The product of its digits is 308629440, while the sum is 72.

The spelling of 225737989992 in words is "two hundred twenty-five billion, seven hundred thirty-seven million, nine hundred eighty-nine thousand, nine hundred ninety-two".