13103525 has 12 divisors (see below), whose sum is σ = 16492992. Its totient is φ = 10325040.

The previous prime is 13103509. The next prime is 13103533. The reversal of 13103525 is 52530131.

It is not a de Polignac number, because 13103525 - 2⁴ = 13103509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13103497 and 13103506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2237 + ... + 5586.

It is an arithmetic number, because the mean of its divisors is an integer number (1374416).

Almost surely, 2^13103525 is an apocalyptic number.

It is an amenable number.

13103525 is a deficient number, since it is larger than the sum of its proper divisors (3389467).

13103525 is an equidigital number, since it uses as much as digits as its factorization.

13103525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7900 (or 7895 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 13103525 is about 3619.8791416289. The cubic root of 13103525 is about 235.7559780203.

Adding to 13103525 its reverse (52530131), we get a palindrome (65633656).

The spelling of 13103525 in words is "thirteen million, one hundred three thousand, five hundred twenty-five".