12944518025 has 6 divisors (see below), whose sum is σ = 16051202382. Its totient is φ = 10355614400.

The previous prime is 12944518009. The next prime is 12944518051. The reversal of 12944518025 is 52081544921.

It can be written as a sum of positive squares in 3 ways, for example, as 2673303616 + 10271214409 = 51704^2 + 101347^2 .

It is not a de Polignac number, because 12944518025 - 2⁴ = 12944518009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 258890336 + ... + 258890385.

It is an arithmetic number, because the mean of its divisors is an integer number (2675200397).

Almost surely, 2^12944518025 is an apocalyptic number.

It is an amenable number.

12944518025 is a deficient number, since it is larger than the sum of its proper divisors (3106684357).

12944518025 is an equidigital number, since it uses as much as digits as its factorization.

12944518025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517780731 (or 517780726 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 12944518025 in words is "twelve billion, nine hundred forty-four million, five hundred eighteen thousand, twenty-five".