13156525 has 12 divisors (see below), whose sum is σ = 16359444. Its totient is φ = 10496000.

The previous prime is 13156501. The next prime is 13156537. The reversal of 13156525 is 52565131.

It can be written as a sum of positive squares in 6 ways, for example, as 8649 + 13147876 = 93^2 + 3626^2 .

It is not a de Polignac number, because 13156525 - 2⁷ = 13156397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13156493 and 13156502.

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, 15615 + ... + 16435.

It is an arithmetic number, because the mean of its divisors is an integer number (1363287).

Almost surely, 2^13156525 is an apocalyptic number.

It is an amenable number.

13156525 is a deficient number, since it is larger than the sum of its proper divisors (3202919).

13156525 is an equidigital number, since it uses as much as digits as its factorization.

13156525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 1467 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 13156525 is about 3627.1924404421. The cubic root of 13156525 is about 236.0734055386.

The spelling of 13156525 in words is "thirteen million, one hundred fifty-six thousand, five hundred twenty-five".