12265709 has 2 divisors, whose sum is σ = 12265710. Its totient is φ = 12265708.

The previous prime is 12265667. The next prime is 12265711. The reversal of 12265709 is 90756221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10220809 + 2044900 = 3197^2 + 1430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12265709 is a prime.

Together with 12265711, 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 (12265769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6132854 + 6132855.

It is an arithmetic number, because the mean of its divisors is an integer number (6132855).

Almost surely, 2^12265709 is an apocalyptic number.

It is an amenable number.

12265709 is a deficient number, since it is larger than the sum of its proper divisors (1).

12265709 is an equidigital number, since it uses as much as digits as its factorization.

12265709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 12265709 is about 3502.2434238642. The cubic root of 12265709 is about 230.6203103949.

The spelling of 12265709 in words is "twelve million, two hundred sixty-five thousand, seven hundred nine".