21902426840325 has 96 divisors (see below), whose sum is σ = 37913287680000. Its totient is φ = 11143300896000.

The previous prime is 21902426840321. The next prime is 21902426840363. The reversal of 21902426840325 is 52304862420912.

It is not a de Polignac number, because 21902426840325 - 2² = 21902426840321 is a prime.

It is a super-2 number, since 2×21902426840325² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21902426840321) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1622515426 + ... + 1622528924.

It is an arithmetic number, because the mean of its divisors is an integer number (394930080000).

Almost surely, 2^{21902426840325} is an apocalyptic number.

21902426840325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21902426840325 is a deficient number, since it is larger than the sum of its proper divisors (16010860839675).

21902426840325 is a wasteful number, since it uses less digits than its factorization.

21902426840325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23443 (or 23438 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 21902426840325 in words is "twenty-one trillion, nine hundred two billion, four hundred twenty-six million, eight hundred forty thousand, three hundred twenty-five".