22125657252 has 12 divisors (see below), whose sum is σ = 51626533616. Its totient is φ = 7375219080.

The previous prime is 22125657251. The next prime is 22125657283. The reversal of 22125657252 is 25275652122.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 22125657252.

It is not an unprimeable number, because it can be changed into a prime (22125657251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921902374 + ... + 921902397.

Almost surely, 2^22125657252 is an apocalyptic number.

It is an amenable number.

22125657252 is an abundant number, since it is smaller than the sum of its proper divisors (29500876364).

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

22125657252 is a wasteful number, since it uses less digits than its factorization.

22125657252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843804778 (or 1843804776 counting only the distinct ones).

The product of its digits is 168000, while the sum is 39.

The spelling of 22125657252 in words is "twenty-two billion, one hundred twenty-five million, six hundred fifty-seven thousand, two hundred fifty-two".