13325309 has 4 divisors (see below), whose sum is σ = 13345020. Its totient is φ = 13305600.

The previous prime is 13325293. The next prime is 13325311. The reversal of 13325309 is 90352331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11356900 + 1968409 = 3370^2 + 1403^2 .

It is a cyclic number.

It is not a de Polignac number, because 13325309 - 2⁴ = 13325293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13325329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8804 + ... + 10205.

It is an arithmetic number, because the mean of its divisors is an integer number (3336255).

Almost surely, 2^13325309 is an apocalyptic number.

It is an amenable number.

13325309 is a deficient number, since it is larger than the sum of its proper divisors (19711).

13325309 is an equidigital number, since it uses as much as digits as its factorization.

13325309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19710.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 13325309 is about 3650.3847742396. The cubic root of 13325309 is about 237.0786412575.

The spelling of 13325309 in words is "thirteen million, three hundred twenty-five thousand, three hundred nine".