13525689917 has 2 divisors, whose sum is σ = 13525689918. Its totient is φ = 13525689916.

The previous prime is 13525689913. The next prime is 13525690019. The reversal of 13525689917 is 71998652531.

It is a happy number.

13525689917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10360389796 + 3165300121 = 101786^2 + 56261^2 .

It is a cyclic number.

It is not a de Polignac number, because 13525689917 - 2² = 13525689913 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13525689913) by changing a digit.

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 as a sum of consecutive naturals, namely, 6762844958 + 6762844959.

It is an arithmetic number, because the mean of its divisors is an integer number (6762844959).

Almost surely, 2^13525689917 is an apocalyptic number.

It is an amenable number.

13525689917 is a deficient number, since it is larger than the sum of its proper divisors (1).

13525689917 is an equidigital number, since it uses as much as digits as its factorization.

13525689917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4082400, while the sum is 56.

The spelling of 13525689917 in words is "thirteen billion, five hundred twenty-five million, six hundred eighty-nine thousand, nine hundred seventeen".