21525222252512 has 48 divisors (see below), whose sum is σ = 46254249465984. Its totient is φ = 9779124720000.

The previous prime is 21525222252509. The next prime is 21525222252563.

21525222252512 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 7 ways as a sum of consecutive naturals, for example, 15154364 + ... + 16513787.

It is an arithmetic number, because the mean of its divisors is an integer number (963630197208).

Almost surely, 2^{21525222252512} is an apocalyptic number.

21525222252512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21525222252512 is an abundant number, since it is smaller than the sum of its proper divisors (24729027213472).

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

21525222252512 is a wasteful number, since it uses less digits than its factorization.

21525222252512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31670103 (or 31670095 counting only the distinct ones).

The product of its digits is 160000, while the sum is 38.

The spelling of 21525222252512 in words is "twenty-one trillion, five hundred twenty-five billion, two hundred twenty-two million, two hundred fifty-two thousand, five hundred twelve".