21610452325 has 48 divisors (see below), whose sum is σ = 33436859904. Its totient is φ = 13460299200.

The previous prime is 21610452271. The next prime is 21610452341. The reversal of 21610452325 is 52325401612.

It is not a de Polignac number, because 21610452325 - 2⁷ = 21610452197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2743042 + ... + 2750908.

It is an arithmetic number, because the mean of its divisors is an integer number (696601248).

Almost surely, 2^21610452325 is an apocalyptic number.

21610452325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21610452325 is a deficient number, since it is larger than the sum of its proper divisors (11826407579).

21610452325 is a wasteful number, since it uses less digits than its factorization.

21610452325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9322 (or 9317 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 21610452325 its reverse (52325401612), we get a palindrome (73935853937).

The spelling of 21610452325 in words is "twenty-one billion, six hundred ten million, four hundred fifty-two thousand, three hundred twenty-five".