21442625200 has 30 divisors (see below), whose sum is σ = 51515908004. Its totient is φ = 8577049920.

The previous prime is 21442625189. The next prime is 21442625203. The reversal of 21442625200 is 252624412.

It is not an unprimeable number, because it can be changed into a prime (21442625203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26802882 + ... + 26803681.

Almost surely, 2^21442625200 is an apocalyptic number.

21442625200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21442625200 is an abundant number, since it is smaller than the sum of its proper divisors (30073282804).

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

21442625200 is a wasteful number, since it uses less digits than its factorization.

21442625200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53606581 (or 53606570 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The spelling of 21442625200 in words is "twenty-one billion, four hundred forty-two million, six hundred twenty-five thousand, two hundred".