21952625912 has 64 divisors (see below), whose sum is σ = 50966910720. Its totient is φ = 8648898048.

The previous prime is 21952625887. The next prime is 21952625953.

21952625912 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227198 + ... + 309069.

It is an arithmetic number, because the mean of its divisors is an integer number (796357980).

Almost surely, 2^21952625912 is an apocalyptic number.

It is an amenable number.

21952625912 is an abundant number, since it is smaller than the sum of its proper divisors (29014284808).

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

21952625912 is a wasteful number, since it uses less digits than its factorization.

21952625912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536340 (or 536336 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The spelling of 21952625912 in words is "twenty-one billion, nine hundred fifty-two million, six hundred twenty-five thousand, nine hundred twelve".