22512004551 has 24 divisors (see below), whose sum is σ = 33648413760. Its totient is φ = 14486270400.

The previous prime is 22512004547. The next prime is 22512004579. The reversal of 22512004551 is 15540021522.

22512004551 is a `hidden beast` number, since 2 + 2 + 5 + 1 + 200 + 455 + 1 = 666.

It is not a de Polignac number, because 22512004551 - 2² = 22512004547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22512004531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1062481 + ... + 1083461.

It is an arithmetic number, because the mean of its divisors is an integer number (1402017240).

Almost surely, 2^22512004551 is an apocalyptic number.

22512004551 is a deficient number, since it is larger than the sum of its proper divisors (11136409209).

22512004551 is a wasteful number, since it uses less digits than its factorization.

22512004551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25127 (or 25124 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 22512004551 in words is "twenty-two billion, five hundred twelve million, four thousand, five hundred fifty-one".