22006239025 has 9 divisors (see below), whose sum is σ = 27288656161. Its totient is φ = 17604397840.

The previous prime is 22006239019. The next prime is 22006239061. The reversal of 22006239025 is 52093260022.

It is a happy number.

The square root of 22006239025 is 148345.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 11051686129 + 10954552896 = 105127^2 + 104664^2 .

It is not a de Polignac number, because 22006239025 - 2⁵ = 22006238993 is a prime.

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 726891 + ... + 756559.

Almost surely, 2^22006239025 is an apocalyptic number.

22006239025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22006239025 is the 148345-th square number.

22006239025 is the 74173-rd centered octagonal number.

It is an amenable number.

22006239025 is a deficient number, since it is larger than the sum of its proper divisors (5282417136).

22006239025 is an frugal number, since it uses more digits than its factorization.

22006239025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59348 (or 29674 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 22006239025 its reverse (52093260022), we get a palindrome (74099499047).

The spelling of 22006239025 in words is "twenty-two billion, six million, two hundred thirty-nine thousand, twenty-five".