21313670325 has 24 divisors (see below), whose sum is σ = 35421209088. Its totient is φ = 11308385280.

The previous prime is 21313670311. The next prime is 21313670341. The reversal of 21313670325 is 52307631312.

It is not a de Polignac number, because 21313670325 - 2⁷ = 21313670197 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 721749 + ... + 750698.

It is an arithmetic number, because the mean of its divisors is an integer number (1475883712).

Almost surely, 2^21313670325 is an apocalyptic number.

21313670325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21313670325 is a deficient number, since it is larger than the sum of its proper divisors (14107538763).

21313670325 is a wasteful number, since it uses less digits than its factorization.

21313670325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472653 (or 1472648 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

The spelling of 21313670325 in words is "twenty-one billion, three hundred thirteen million, six hundred seventy thousand, three hundred twenty-five".