12225613 has 2 divisors, whose sum is σ = 12225614. Its totient is φ = 12225612.

The previous prime is 12225611. The next prime is 12225641. The reversal of 12225613 is 31652221.

12225613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11819844 + 405769 = 3438^2 + 637^2 .

It is an emirp because it is prime and its reverse (31652221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12225613 - 2¹ = 12225611 is a prime.

It is a super-2 number, since 2×12225613² = 298931226451538, which contains 22 as substring.

Together with 12225611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12225611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6112806 + 6112807.

It is an arithmetic number, because the mean of its divisors is an integer number (6112807).

Almost surely, 2^12225613 is an apocalyptic number.

It is an amenable number.

12225613 is a deficient number, since it is larger than the sum of its proper divisors (1).

12225613 is an equidigital number, since it uses as much as digits as its factorization.

12225613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 12225613 is about 3496.5144072347. The cubic root of 12225613 is about 230.3687405849.

Adding to 12225613 its reverse (31652221), we get a palindrome (43877834).

It can be divided in two parts, 12 and 225613, that added together give a square (225625 = 475²).

The spelling of 12225613 in words is "twelve million, two hundred twenty-five thousand, six hundred thirteen".