13625309539 has 2 divisors, whose sum is σ = 13625309540. Its totient is φ = 13625309538.

The previous prime is 13625309519. The next prime is 13625309657. The reversal of 13625309539 is 93590352631.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13625309539 is a prime.

It is not a weakly prime, because it can be changed into another prime (13625309519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6812654769 + 6812654770.

It is an arithmetic number, because the mean of its divisors is an integer number (6812654770).

Almost surely, 2^13625309539 is an apocalyptic number.

13625309539 is a deficient number, since it is larger than the sum of its proper divisors (1).

13625309539 is an equidigital number, since it uses as much as digits as its factorization.

13625309539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 656100, while the sum is 46.

The spelling of 13625309539 in words is "thirteen billion, six hundred twenty-five million, three hundred nine thousand, five hundred thirty-nine".