13120304525 has 24 divisors (see below), whose sum is σ = 16717855584. Its totient is φ = 10207080000.

The previous prime is 13120304503. The next prime is 13120304543. The reversal of 13120304525 is 52540302131.

It is a happy number.

It is not a de Polignac number, because 13120304525 - 2¹⁰ = 13120303501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13120304494 and 13120304503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3004994 + ... + 3009356.

It is an arithmetic number, because the mean of its divisors is an integer number (696577316).

Almost surely, 2^13120304525 is an apocalyptic number.

It is an amenable number.

13120304525 is a deficient number, since it is larger than the sum of its proper divisors (3597551059).

13120304525 is a wasteful number, since it uses less digits than its factorization.

13120304525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7661 (or 7656 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 13120304525 its reverse (52540302131), we get a palindrome (65660606656).

The spelling of 13120304525 in words is "thirteen billion, one hundred twenty million, three hundred four thousand, five hundred twenty-five".