13225217 has 2 divisors, whose sum is σ = 13225218. Its totient is φ = 13225216.

The previous prime is 13225213. The next prime is 13225229. The reversal of 13225217 is 71252231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10042561 + 3182656 = 3169^2 + 1784^2 .

It is an emirp because it is prime and its reverse (71252231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13225217 - 2² = 13225213 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13225192 and 13225201.

It is not a weakly prime, because it can be changed into another prime (13225213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6612608 + 6612609.

It is an arithmetic number, because the mean of its divisors is an integer number (6612609).

Almost surely, 2^13225217 is an apocalyptic number.

It is an amenable number.

13225217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13225217 is an equidigital number, since it uses as much as digits as its factorization.

13225217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 23.

The square root of 13225217 is about 3636.6491444735. The cubic root of 13225217 is about 236.4835496397.

Adding to 13225217 its reverse (71252231), we get a palindrome (84477448).

The spelling of 13225217 in words is "thirteen million, two hundred twenty-five thousand, two hundred seventeen".