12440513225225 has 6 divisors (see below), whose sum is σ = 15426236399310. Its totient is φ = 9952410580160.

The previous prime is 12440513225201. The next prime is 12440513225233. The reversal of 12440513225225 is 52252231504421.

It can be written as a sum of positive squares in 3 ways, for example, as 4122641924041 + 8317871301184 = 2030429^2 + 2884072^2 .

It is not a de Polignac number, because 12440513225225 - 2²⁸ = 12440244789769 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 248810264480 + ... + 248810264529.

It is an arithmetic number, because the mean of its divisors is an integer number (2571039399885).

Almost surely, 2^{12440513225225} is an apocalyptic number.

It is an amenable number.

12440513225225 is a deficient number, since it is larger than the sum of its proper divisors (2985723174085).

12440513225225 is an equidigital number, since it uses as much as digits as its factorization.

12440513225225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497620529019 (or 497620529014 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 12440513225225 its reverse (52252231504421), we get a palindrome (64692744729646).

The spelling of 12440513225225 in words is "twelve trillion, four hundred forty billion, five hundred thirteen million, two hundred twenty-five thousand, two hundred twenty-five".