22158624252 has 12 divisors (see below), whose sum is σ = 51703456616. Its totient is φ = 7386208080.

The previous prime is 22158624247. The next prime is 22158624283. The reversal of 22158624252 is 25242685122.

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

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22158624252.

It is a congruent number.

It is an unprimeable number.

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, 923275999 + ... + 923276022.

Almost surely, 2^22158624252 is an apocalyptic number.

It is an amenable number.

22158624252 is an abundant number, since it is smaller than the sum of its proper divisors (29544832364).

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

22158624252 is a wasteful number, since it uses less digits than its factorization.

22158624252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846552028 (or 1846552026 counting only the distinct ones).

The product of its digits is 153600, while the sum is 39.

The spelling of 22158624252 in words is "twenty-two billion, one hundred fifty-eight million, six hundred twenty-four thousand, two hundred fifty-two".