12225709 has 2 divisors, whose sum is σ = 12225710. Its totient is φ = 12225708.

The previous prime is 12225701. The next prime is 12225727. The reversal of 12225709 is 90752221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11923209 + 302500 = 3453^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 12225709 - 2³ = 12225701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12225701) 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, 6112854 + 6112855.

It is an arithmetic number, because the mean of its divisors is an integer number (6112855).

Almost surely, 2^12225709 is an apocalyptic number.

It is an amenable number.

12225709 is a deficient number, since it is larger than the sum of its proper divisors (1).

12225709 is an equidigital number, since it uses as much as digits as its factorization.

12225709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 12225709 is about 3496.5281351649. The cubic root of 12225709 is about 230.3693435633.

The spelling of 12225709 in words is "twelve million, two hundred twenty-five thousand, seven hundred nine".