13291725 has 12 divisors (see below), whose sum is σ = 21975776. Its totient is φ = 7088880.

The previous prime is 13291721. The next prime is 13291753. The reversal of 13291725 is 52719231.

13291725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13291725 - 2² = 13291721 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13291692 and 13291701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13291721) 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, 88537 + ... + 88686.

Almost surely, 2^13291725 is an apocalyptic number.

13291725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13291725 is a deficient number, since it is larger than the sum of its proper divisors (8684051).

13291725 is a wasteful number, since it uses less digits than its factorization.

13291725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177236 (or 177231 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 13291725 is about 3645.7818091597. The cubic root of 13291725 is about 236.8793026047.

The spelling of 13291725 in words is "thirteen million, two hundred ninety-one thousand, seven hundred twenty-five".