13124725 has 12 divisors (see below), whose sum is σ = 17131840. Its totient is φ = 9946800.

The previous prime is 13124723. The next prime is 13124747. The reversal of 13124725 is 52742131.

It is a happy number.

It is not a de Polignac number, because 13124725 - 2¹ = 13124723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 13124725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13124723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13341 + ... + 14290.

Almost surely, 2^13124725 is an apocalyptic number.

It is an amenable number.

13124725 is a deficient number, since it is larger than the sum of its proper divisors (4007115).

13124725 is a wasteful number, since it uses less digits than its factorization.

13124725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27660 (or 27655 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 13124725 is about 3622.8062327428. The cubic root of 13124725 is about 235.8830515556.

Adding to 13124725 its reverse (52742131), we get a palindrome (65866856).

The spelling of 13124725 in words is "thirteen million, one hundred twenty-four thousand, seven hundred twenty-five".