13163225 has 12 divisors (see below), whose sum is σ = 16418220. Its totient is φ = 10468800.

The previous prime is 13163221. The next prime is 13163237. The reversal of 13163225 is 52236131.

It can be written as a sum of positive squares in 6 ways, for example, as 976144 + 12187081 = 988^2 + 3491^2 .

It is not a de Polignac number, because 13163225 - 2² = 13163221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13163225.

It is not an unprimeable number, because it can be changed into a prime (13163221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3071 + ... + 5979.

It is an arithmetic number, because the mean of its divisors is an integer number (1368185).

Almost surely, 2^13163225 is an apocalyptic number.

It is an amenable number.

13163225 is a deficient number, since it is larger than the sum of its proper divisors (3254995).

13163225 is a wasteful number, since it uses less digits than its factorization.

13163225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100 (or 3095 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 13163225 is about 3628.1159022280. The cubic root of 13163225 is about 236.1134724357.

Adding to 13163225 its reverse (52236131), we get a palindrome (65399356).

The spelling of 13163225 in words is "thirteen million, one hundred sixty-three thousand, two hundred twenty-five".