22521553552 has 20 divisors (see below), whose sum is σ = 43675466620. Its totient is φ = 11250465408.

The previous prime is 22521553531. The next prime is 22521553567. The reversal of 22521553552 is 25535512522.

It can be written as a sum of positive squares in 2 ways, for example, as 20208328336 + 2313225216 = 142156^2 + 48096^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626427 + ... + 661402.

It is an arithmetic number, because the mean of its divisors is an integer number (2183773331).

Almost surely, 2^22521553552 is an apocalyptic number.

It is an amenable number.

22521553552 is a deficient number, since it is larger than the sum of its proper divisors (21153913068).

22521553552 is a wasteful number, since it uses less digits than its factorization.

22521553552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288930 (or 1288924 counting only the distinct ones).

The product of its digits is 150000, while the sum is 37.

The spelling of 22521553552 in words is "twenty-two billion, five hundred twenty-one million, five hundred fifty-three thousand, five hundred fifty-two".