13125249 has 24 divisors (see below), whose sum is σ = 19955520. Its totient is φ = 8296992.

The previous prime is 13125223. The next prime is 13125251. The reversal of 13125249 is 94252131.

13125249 is a `hidden beast` number, since 131 + 2 + 524 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-13125249 is a prime.

It is a super-2 number, since 2×13125249² = 344544322624002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13125209) 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, 33547 + ... + 33935.

It is an arithmetic number, because the mean of its divisors is an integer number (831480).

Almost surely, 2^13125249 is an apocalyptic number.

It is an amenable number.

13125249 is a deficient number, since it is larger than the sum of its proper divisors (6830271).

13125249 is a wasteful number, since it uses less digits than its factorization.

13125249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 578 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 13125249 is about 3622.8785516492. The cubic root of 13125249 is about 235.8861906963.

It can be divided in two parts, 1312 and 5249, that added together give a 8-th power (6561 = 3⁸).

The spelling of 13125249 in words is "thirteen million, one hundred twenty-five thousand, two hundred forty-nine".