21323023325 has 24 divisors (see below), whose sum is σ = 27067047360. Its totient is φ = 16658064000.

The previous prime is 21323023297. The next prime is 21323023339. The reversal of 21323023325 is 52332032312.

It is not a de Polignac number, because 21323023325 - 2²⁰ = 21321974749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21323023294 and 21323023303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174857 + ... + 270593.

It is an arithmetic number, because the mean of its divisors is an integer number (1127793640).

Almost surely, 2^21323023325 is an apocalyptic number.

21323023325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21323023325 is a deficient number, since it is larger than the sum of its proper divisors (5744024035).

21323023325 is a wasteful number, since it uses less digits than its factorization.

21323023325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95957 (or 95952 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 21323023325 its reverse (52332032312), we get a palindrome (73655055637).

The spelling of 21323023325 in words is "twenty-one billion, three hundred twenty-three million, twenty-three thousand, three hundred twenty-five".