22521105525 has 24 divisors (see below), whose sum is σ = 38436024064. Its totient is φ = 11623795200.

The previous prime is 22521105493. The next prime is 22521105533. The reversal of 22521105525 is 52550112522.

It is not a de Polignac number, because 22521105525 - 2⁵ = 22521105493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22521105492 and 22521105501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4840924 + ... + 4845573.

Almost surely, 2^22521105525 is an apocalyptic number.

22521105525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22521105525 is a deficient number, since it is larger than the sum of its proper divisors (15914918539).

22521105525 is a wasteful number, since it uses less digits than its factorization.

22521105525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9686541 (or 9686536 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 22521105525 in words is "twenty-two billion, five hundred twenty-one million, one hundred five thousand, five hundred twenty-five".