13525000409 has 2 divisors, whose sum is σ = 13525000410. Its totient is φ = 13525000408.

The previous prime is 13525000393. The next prime is 13525000417. The reversal of 13525000409 is 90400052531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9309355225 + 4215645184 = 96485^2 + 64928^2 .

It is a cyclic number.

It is not a de Polignac number, because 13525000409 - 2⁴ = 13525000393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13525000499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6762500204 + 6762500205.

It is an arithmetic number, because the mean of its divisors is an integer number (6762500205).

Almost surely, 2^13525000409 is an apocalyptic number.

It is an amenable number.

13525000409 is a deficient number, since it is larger than the sum of its proper divisors (1).

13525000409 is an equidigital number, since it uses as much as digits as its factorization.

13525000409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 13525000409 in words is "thirteen billion, five hundred twenty-five million, four hundred nine", and thus it is an aban number.