22631635625 has 20 divisors (see below), whose sum is σ = 28313936640. Its totient is φ = 18083898000.

The previous prime is 22631635571. The next prime is 22631635627. The reversal of 22631635625 is 52653613622.

It is a de Polignac number, because none of the positive numbers 2^k-22631635625 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22631635627) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 518396 + ... + 560354.

It is an arithmetic number, because the mean of its divisors is an integer number (1415696832).

Almost surely, 2^22631635625 is an apocalyptic number.

22631635625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22631635625 is a deficient number, since it is larger than the sum of its proper divisors (5682301015).

22631635625 is an frugal number, since it uses more digits than its factorization.

22631635625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42842 (or 42827 counting only the distinct ones).

The product of its digits is 388800, while the sum is 41.

The spelling of 22631635625 in words is "twenty-two billion, six hundred thirty-one million, six hundred thirty-five thousand, six hundred twenty-five".