13289725 has 6 divisors (see below), whose sum is σ = 16479290. Its totient is φ = 10631760.

The previous prime is 13289719. The next prime is 13289737. The reversal of 13289725 is 52798231.

It can be written as a sum of positive squares in 3 ways, for example, as 178084 + 13111641 = 422^2 + 3621^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13289725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 265770 + ... + 265819.

Almost surely, 2^13289725 is an apocalyptic number.

It is an amenable number.

13289725 is a deficient number, since it is larger than the sum of its proper divisors (3189565).

13289725 is an equidigital number, since it uses as much as digits as its factorization.

13289725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531599 (or 531594 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 13289725 is about 3645.5075092503. The cubic root of 13289725 is about 236.8674209673.

The spelling of 13289725 in words is "thirteen million, two hundred eighty-nine thousand, seven hundred twenty-five".