13525235249 has 2 divisors, whose sum is σ = 13525235250. Its totient is φ = 13525235248.

The previous prime is 13525235233. The next prime is 13525235257. The reversal of 13525235249 is 94253252531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7466169649 + 6059065600 = 86407^2 + 77840^2 .

It is a cyclic number.

It is not a de Polignac number, because 13525235249 - 2⁴ = 13525235233 is a prime.

It is not a weakly prime, because it can be changed into another prime (13525235299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6762617624 + 6762617625.

It is an arithmetic number, because the mean of its divisors is an integer number (6762617625).

Almost surely, 2^13525235249 is an apocalyptic number.

It is an amenable number.

13525235249 is a deficient number, since it is larger than the sum of its proper divisors (1).

13525235249 is an equidigital number, since it uses as much as digits as its factorization.

13525235249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 41.

The spelling of 13525235249 in words is "thirteen billion, five hundred twenty-five million, two hundred thirty-five thousand, two hundred forty-nine".