13149525 has 12 divisors (see below), whose sum is σ = 21740672. Its totient is φ = 7013040.

The previous prime is 13149523. The next prime is 13149571. The reversal of 13149525 is 52594131.

It is not a de Polignac number, because 13149525 - 2¹ = 13149523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13149492 and 13149501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13149523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87589 + ... + 87738.

Almost surely, 2^13149525 is an apocalyptic number.

13149525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13149525 is a deficient number, since it is larger than the sum of its proper divisors (8591147).

13149525 is a wasteful number, since it uses less digits than its factorization.

13149525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175340 (or 175335 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 13149525 is about 3626.2273784196. The cubic root of 13149525 is about 236.0315300687.

The spelling of 13149525 in words is "thirteen million, one hundred forty-nine thousand, five hundred twenty-five".