22004552500 has 180 divisors, whose sum is σ = 56270912544. Its totient is φ = 7504728000.

The previous prime is 22004552483. The next prime is 22004552527. The reversal of 22004552500 is 525540022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 32217159 + ... + 32217841.

Almost surely, 2^22004552500 is an apocalyptic number.

22004552500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22004552500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28135456272).

22004552500 is an abundant number, since it is smaller than the sum of its proper divisors (34266360044).

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

22004552500 is a wasteful number, since it uses less digits than its factorization.

22004552500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The spelling of 22004552500 in words is "twenty-two billion, four million, five hundred fifty-two thousand, five hundred".