21552125200 has 30 divisors (see below), whose sum is σ = 51778981754. Its totient is φ = 8620849920.

The previous prime is 21552125191. The next prime is 21552125251. The reversal of 21552125200 is 252125512.

It can be written as a sum of positive squares in 3 ways, for example, as 220938496 + 21331186704 = 14864^2 + 146052^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26939757 + ... + 26940556.

Almost surely, 2^21552125200 is an apocalyptic number.

21552125200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21552125200 is an abundant number, since it is smaller than the sum of its proper divisors (30226856554).

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

21552125200 is a wasteful number, since it uses less digits than its factorization.

21552125200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53880331 (or 53880320 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 21552125200 in words is "twenty-one billion, five hundred fifty-two million, one hundred twenty-five thousand, two hundred".