12225427 has 2 divisors, whose sum is σ = 12225428. Its totient is φ = 12225426.

The previous prime is 12225407. The next prime is 12225461. The reversal of 12225427 is 72452221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12225427 - 2⁷ = 12225299 is a prime.

It is a super-2 number, since 2×12225427² = 298922130664658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12225407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6112713 + 6112714.

It is an arithmetic number, because the mean of its divisors is an integer number (6112714).

Almost surely, 2^12225427 is an apocalyptic number.

12225427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12225427 is an equidigital number, since it uses as much as digits as its factorization.

12225427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 25.

The square root of 12225427 is about 3496.4878092166. The cubic root of 12225427 is about 230.3675723053.

Adding to 12225427 its reverse (72452221), we get a palindrome (84677648).

The spelling of 12225427 in words is "twelve million, two hundred twenty-five thousand, four hundred twenty-seven".