22523542500 has 120 divisors (see below), whose sum is σ = 66912931008. Its totient is φ = 5892848000.

The previous prime is 22523542499. The next prime is 22523542529. The reversal of 22523542500 is 524532522.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 369169 + ... + 425831.

Almost surely, 2^22523542500 is an apocalyptic number.

22523542500 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 22523542500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33456465504).

22523542500 is an abundant number, since it is smaller than the sum of its proper divisors (44389388508).

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

22523542500 is a wasteful number, since it uses less digits than its factorization.

22523542500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56743 (or 56726 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The spelling of 22523542500 in words is "twenty-two billion, five hundred twenty-three million, five hundred forty-two thousand, five hundred".