12225461 has 2 divisors, whose sum is σ = 12225462. Its totient is φ = 12225460.

The previous prime is 12225427. The next prime is 12225463. The reversal of 12225461 is 16452221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7022500 + 5202961 = 2650^2 + 2281^2 .

It is an emirp because it is prime and its reverse (16452221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12225461 - 2¹⁸ = 11963317 is a prime.

Together with 12225463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12225463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6112730 + 6112731.

It is an arithmetic number, because the mean of its divisors is an integer number (6112731).

Almost surely, 2^12225461 is an apocalyptic number.

It is an amenable number.

12225461 is a deficient number, since it is larger than the sum of its proper divisors (1).

12225461 is an equidigital number, since it uses as much as digits as its factorization.

12225461 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 12225461 is about 3496.4926712350. The cubic root of 12225461 is about 230.3677858627.

Adding to 12225461 its reverse (16452221), we get a palindrome (28677682).

The spelling of 12225461 in words is "twelve million, two hundred twenty-five thousand, four hundred sixty-one".