21233022325 has 6 divisors (see below), whose sum is σ = 26328947714. Its totient is φ = 16986417840.

The previous prime is 21233022319. The next prime is 21233022341. The reversal of 21233022325 is 52322033212.

It can be written as a sum of positive squares in 3 ways, for example, as 6311666916 + 14921355409 = 79446^2 + 122153^2 .

It is not a de Polignac number, because 21233022325 - 2⁷ = 21233022197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 849320893 = 21233022325 / (2 + 1 + 2 + 3 + 3 + 0 + 2 + 2 + 3 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21233022325.

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 5 ways as a sum of consecutive naturals, for example, 424660422 + ... + 424660471.

Almost surely, 2^21233022325 is an apocalyptic number.

21233022325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21233022325 is a deficient number, since it is larger than the sum of its proper divisors (5095925389).

21233022325 is an equidigital number, since it uses as much as digits as its factorization.

21233022325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849320903 (or 849320898 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 21233022325 its reverse (52322033212), we get a palindrome (73555055537).

The spelling of 21233022325 in words is "twenty-one billion, two hundred thirty-three million, twenty-two thousand, three hundred twenty-five".