13065520825 has 24 divisors (see below), whose sum is σ = 18557615808. Its totient is φ = 8938937280.

The previous prime is 13065520823. The next prime is 13065520841. The reversal of 13065520825 is 52802556031.

It is a happy number.

It is not a de Polignac number, because 13065520825 - 2¹ = 13065520823 is a prime.

It is a Leyland number of the form 13⁶ + 6¹³.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13065520823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6742 + ... + 161791.

It is an arithmetic number, because the mean of its divisors is an integer number (773233992).

Almost surely, 2^13065520825 is an apocalyptic number.

It is an amenable number.

13065520825 is a deficient number, since it is larger than the sum of its proper divisors (5492094983).

13065520825 is a wasteful number, since it uses less digits than its factorization.

13065520825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168993 (or 168988 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 13065520825 in words is "thirteen billion, sixty-five million, five hundred twenty thousand, eight hundred twenty-five".