22615764725 has 6 divisors (see below), whose sum is σ = 28043548290. Its totient is φ = 18092611760.

The previous prime is 22615764713. The next prime is 22615764727. The reversal of 22615764725 is 52746751622.

It can be written as a sum of positive squares in 3 ways, for example, as 3093806884 + 19521957841 = 55622^2 + 139721^2 .

It is not a de Polignac number, because 22615764725 - 2⁸ = 22615764469 is a prime.

It is a super-2 number, since 2×22615764725² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22615764725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22615764727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 452315270 + ... + 452315319.

It is an arithmetic number, because the mean of its divisors is an integer number (4673924715).

Almost surely, 2^22615764725 is an apocalyptic number.

22615764725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22615764725 is a deficient number, since it is larger than the sum of its proper divisors (5427783565).

22615764725 is an equidigital number, since it uses as much as digits as its factorization.

22615764725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904630599 (or 904630594 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 47.

The spelling of 22615764725 in words is "twenty-two billion, six hundred fifteen million, seven hundred sixty-four thousand, seven hundred twenty-five".