12225647 has 6 divisors (see below), whose sum is σ = 14221728. Its totient is φ = 10479084.

The previous prime is 12225643. The next prime is 12225649. The reversal of 12225647 is 74652221.

It is a happy number.

It is not a de Polignac number, because 12225647 - 2² = 12225643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124703 + ... + 124800.

It is an arithmetic number, because the mean of its divisors is an integer number (2370288).

Almost surely, 2^12225647 is an apocalyptic number.

12225647 is a deficient number, since it is larger than the sum of its proper divisors (1996081).

12225647 is an equidigital number, since it uses as much as digits as its factorization.

12225647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249517 (or 249510 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 12225647 is about 3496.5192692162. The cubic root of 12225647 is about 230.3689541401.

Adding to 12225647 its reverse (74652221), we get a palindrome (86877868).

The spelling of 12225647 in words is "twelve million, two hundred twenty-five thousand, six hundred forty-seven".