22661155116625 has 8 divisors (see below), whose sum is σ = 28281121585704. Its totient is φ = 18128924093200.

The previous prime is 22661155116623. The next prime is 22661155116629. The reversal of 22661155116625 is 52661155116622.

It can be written as a sum of positive squares in 4 ways, for example, as 7153870307584 + 15507284809041 = 2674672^2 + 3937929^2 .

It is not a de Polignac number, because 22661155116625 - 2¹ = 22661155116623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22661155116623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90644620342 + ... + 90644620591.

It is an arithmetic number, because the mean of its divisors is an integer number (3535140198213).

Almost surely, 2^{22661155116625} is an apocalyptic number.

22661155116625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22661155116625 is a deficient number, since it is larger than the sum of its proper divisors (5619966469079).

22661155116625 is an equidigital number, since it uses as much as digits as its factorization.

22661155116625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181289240948 (or 181289240938 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 49.

The spelling of 22661155116625 in words is "twenty-two trillion, six hundred sixty-one billion, one hundred fifty-five million, one hundred sixteen thousand, six hundred twenty-five".