12641225 has 12 divisors (see below), whose sum is σ = 15911184. Its totient is φ = 9960720.

The previous prime is 12641203. The next prime is 12641249. The reversal of 12641225 is 52214621.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-12641225 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12641225.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2099 + ... + 5448.

It is an arithmetic number, because the mean of its divisors is an integer number (1325932).

Almost surely, 2^12641225 is an apocalyptic number.

It is an amenable number.

12641225 is a deficient number, since it is larger than the sum of its proper divisors (3269959).

12641225 is an equidigital number, since it uses as much as digits as its factorization.

12641225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7624 (or 7619 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 12641225 is about 3555.4500418372. The cubic root of 12641225 is about 232.9501818374.

Adding to 12641225 its reverse (52214621), we get a palindrome (64855846).

The spelling of 12641225 in words is "twelve million, six hundred forty-one thousand, two hundred twenty-five".