22523213500 has 48 divisors (see below), whose sum is σ = 50520218112. Its totient is φ = 8765784000.

The previous prime is 22523213497. The next prime is 22523213527. The reversal of 22523213500 is 531232522.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 590236 + ... + 627235.

It is an arithmetic number, because the mean of its divisors is an integer number (1052504544).

Almost surely, 2^22523213500 is an apocalyptic number.

22523213500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22523213500 is an abundant number, since it is smaller than the sum of its proper divisors (27997004612).

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

22523213500 is a wasteful number, since it uses less digits than its factorization.

22523213500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217527 (or 1217515 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The spelling of 22523213500 in words is "twenty-two billion, five hundred twenty-three million, two hundred thirteen thousand, five hundred".