13159225 has 12 divisors (see below), whose sum is σ = 16586860. Its totient is φ = 10353600.

The previous prime is 13159219. The next prime is 13159249. The reversal of 13159225 is 52295131.

13159225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1159929 + 11999296 = 1077^2 + 3464^2 .

It is not a de Polignac number, because 13159225 - 2⁵ = 13159193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13159193 and 13159202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2790 + ... + 5839.

Almost surely, 2^13159225 is an apocalyptic number.

It is an amenable number.

13159225 is a deficient number, since it is larger than the sum of its proper divisors (3427635).

13159225 is an equidigital number, since it uses as much as digits as its factorization.

13159225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8700 (or 8695 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 13159225 is about 3627.5646100380. The cubic root of 13159225 is about 236.0895535361.

The spelling of 13159225 in words is "thirteen million, one hundred fifty-nine thousand, two hundred twenty-five".