21322206325 has 24 divisors (see below), whose sum is σ = 30352168448. Its totient is φ = 14555350080.

The previous prime is 21322206271. The next prime is 21322206337. The reversal of 21322206325 is 52360222312.

It is a happy number.

It is not a de Polignac number, because 21322206325 - 2¹⁹ = 21321682037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21322206293 and 21322206302.

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, 234162 + ... + 312211.

Almost surely, 2^21322206325 is an apocalyptic number.

21322206325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21322206325 is a deficient number, since it is larger than the sum of its proper divisors (9029962123).

21322206325 is a wasteful number, since it uses less digits than its factorization.

21322206325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546613 (or 546608 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 21322206325 its reverse (52360222312), we get a palindrome (73682428637).

The spelling of 21322206325 in words is "twenty-one billion, three hundred twenty-two million, two hundred six thousand, three hundred twenty-five".