22005124120225 has 6 divisors (see below), whose sum is σ = 27286353909110. Its totient is φ = 17604099296160.

The previous prime is 22005124120183. The next prime is 22005124120337. The reversal of 22005124120225 is 52202142150022.

It can be written as a sum of positive squares in 3 ways, for example, as 29195873424 + 21975928246801 = 170868^2 + 4687849^2 .

It is not a de Polignac number, because 22005124120225 - 2¹⁷ = 22005123989153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22005124120193 and 22005124120202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 440102482380 + ... + 440102482429.

Almost surely, 2^{22005124120225} is an apocalyptic number.

22005124120225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22005124120225 is a deficient number, since it is larger than the sum of its proper divisors (5281229788885).

22005124120225 is an equidigital number, since it uses as much as digits as its factorization.

22005124120225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880204964819 (or 880204964814 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 22005124120225 its reverse (52202142150022), we get a palindrome (74207266270247).

The spelling of 22005124120225 in words is "twenty-two trillion, five billion, one hundred twenty-four million, one hundred twenty thousand, two hundred twenty-five".