13013225 has 6 divisors (see below), whose sum is σ = 16136430. Its totient is φ = 10410560.

The previous prime is 13013197. The next prime is 13013227. The reversal of 13013225 is 52231031.

13013225 is digitally balanced in base 3, 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 958441 + 12054784 = 979^2 + 3472^2 .

It is not a de Polignac number, because 13013225 - 2⁸ = 13012969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13013227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260240 + ... + 260289.

It is an arithmetic number, because the mean of its divisors is an integer number (2689405).

Almost surely, 2^13013225 is an apocalyptic number.

It is an amenable number.

13013225 is a deficient number, since it is larger than the sum of its proper divisors (3123205).

13013225 is an equidigital number, since it uses as much as digits as its factorization.

13013225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520539 (or 520534 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 13013225 is about 3607.3847867950. The cubic root of 13013225 is about 235.2131761114.

Adding to 13013225 its reverse (52231031), we get a palindrome (65244256).

The spelling of 13013225 in words is "thirteen million, thirteen thousand, two hundred twenty-five".