22564531000 has 64 divisors (see below), whose sum is σ = 57601121760. Its totient is φ = 8205280000.

The previous prime is 22564530983. The next prime is 22564531009. The reversal of 22564531000 is 13546522.

It is a super-2 number, since 2×22564531000² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22564531000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22564531009) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1014661 + ... + 1036660.

Almost surely, 2^22564531000 is an apocalyptic number.

22564531000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22564531000 is an abundant number, since it is smaller than the sum of its proper divisors (35036590760).

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

22564531000 is a wasteful number, since it uses less digits than its factorization.

22564531000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051353 (or 2051339 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 22564531000 in words is "twenty-two billion, five hundred sixty-four million, five hundred thirty-one thousand".