13015225 has 6 divisors (see below), whose sum is σ = 16138910. Its totient is φ = 10412160.

The previous prime is 13015213. The next prime is 13015241. The reversal of 13015225 is 52251031.

13015225 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 3 ways, for example, as 3888784 + 9126441 = 1972^2 + 3021^2 .

It is not a de Polignac number, because 13015225 - 2²³ = 4626617 is a prime.

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, 260280 + ... + 260329.

Almost surely, 2^13015225 is an apocalyptic number.

It is an amenable number.

13015225 is a deficient number, since it is larger than the sum of its proper divisors (3123685).

13015225 is an equidigital number, since it uses as much as digits as its factorization.

13015225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520619 (or 520614 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 13015225 is about 3607.6619852752. The cubic root of 13015225 is about 235.2252254498.

Adding to 13015225 its reverse (52251031), we get a palindrome (65266256).

The spelling of 13015225 in words is "thirteen million, fifteen thousand, two hundred twenty-five".