13225997 has 2 divisors, whose sum is σ = 13225998. Its totient is φ = 13225996.

The previous prime is 13225987. The next prime is 13225999. The reversal of 13225997 is 79952231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11703241 + 1522756 = 3421^2 + 1234^2 .

It is an emirp because it is prime and its reverse (79952231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13225997 - 2⁴ = 13225981 is a prime.

Together with 13225999, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13225997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13225999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6612998 + 6612999.

It is an arithmetic number, because the mean of its divisors is an integer number (6612999).

Almost surely, 2^13225997 is an apocalyptic number.

It is an amenable number.

13225997 is a deficient number, since it is larger than the sum of its proper divisors (1).

13225997 is an equidigital number, since it uses as much as digits as its factorization.

13225997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 38.

The square root of 13225997 is about 3636.7563844723. The cubic root of 13225997 is about 236.4881986760.

The spelling of 13225997 in words is "thirteen million, two hundred twenty-five thousand, nine hundred ninety-seven".