12801669625 has 16 divisors (see below), whose sum is σ = 16000757136. Its totient is φ = 10225776000.

The previous prime is 12801669623. The next prime is 12801669631. The reversal of 12801669625 is 52696610821.

It can be written as a sum of positive squares in 8 ways, for example, as 6124001536 + 6677668089 = 78256^2 + 81717^2 .

It is not a de Polignac number, because 12801669625 - 2¹ = 12801669623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12801669623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5157 + ... + 160093.

It is an arithmetic number, because the mean of its divisors is an integer number (1000047321).

Almost surely, 2^12801669625 is an apocalyptic number.

It is an amenable number.

12801669625 is a deficient number, since it is larger than the sum of its proper divisors (3199087511).

12801669625 is an equidigital number, since it uses as much as digits as its factorization.

12801669625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155613 (or 155603 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 12801669625 in words is "twelve billion, eight hundred one million, six hundred sixty-nine thousand, six hundred twenty-five".