12225641 has 2 divisors, whose sum is σ = 12225642. Its totient is φ = 12225640.

The previous prime is 12225613. The next prime is 12225643. The reversal of 12225641 is 14652221.

It is a happy number.

12225641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8880400 + 3345241 = 2980^2 + 1829^2 .

It is a cyclic number.

It is not a de Polignac number, because 12225641 - 2¹⁰ = 12224617 is a prime.

Together with 12225643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12225643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6112820 + 6112821.

It is an arithmetic number, because the mean of its divisors is an integer number (6112821).

Almost surely, 2^12225641 is an apocalyptic number.

It is an amenable number.

12225641 is a deficient number, since it is larger than the sum of its proper divisors (1).

12225641 is an equidigital number, since it uses as much as digits as its factorization.

12225641 is an evil number, because the sum of its binary digits is even.

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

The square root of 12225641 is about 3496.5184112199. The cubic root of 12225641 is about 230.3689164539.

Adding to 12225641 its reverse (14652221), we get a palindrome (26877862).

The spelling of 12225641 in words is "twelve million, two hundred twenty-five thousand, six hundred forty-one".