22251575772 has 60 divisors (see below), whose sum is σ = 58185383256. Its totient is φ = 7415232480.

The previous prime is 22251575761. The next prime is 22251575789. The reversal of 22251575772 is 27757515222.

It is a happy number.

22251575772 is a `hidden beast` number, since 2 + 2 + 2 + 5 + 1 + 575 + 7 + 72 = 666.

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 19 ways as a sum of consecutive naturals, for example, 1737063 + ... + 1749825.

Almost surely, 2^22251575772 is an apocalyptic number.

It is an amenable number.

22251575772 is an abundant number, since it is smaller than the sum of its proper divisors (35933807484).

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

22251575772 is a wasteful number, since it uses less digits than its factorization.

22251575772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18160 (or 18149 counting only the distinct ones).

The product of its digits is 686000, while the sum is 45.

The spelling of 22251575772 in words is "twenty-two billion, two hundred fifty-one million, five hundred seventy-five thousand, seven hundred seventy-two".