12265217 has 4 divisors (see below), whose sum is σ = 12282816. Its totient is φ = 12247620.

The previous prime is 12265171. The next prime is 12265229. The reversal of 12265217 is 71256221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71256221 = 53 ⋅1344457.

It is a cyclic number.

It is not a de Polignac number, because 12265217 - 2⁶ = 12265153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12265117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7709 + ... + 9162.

It is an arithmetic number, because the mean of its divisors is an integer number (3070704).

Almost surely, 2^12265217 is an apocalyptic number.

It is an amenable number.

12265217 is a deficient number, since it is larger than the sum of its proper divisors (17599).

12265217 is an equidigital number, since it uses as much as digits as its factorization.

12265217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17598.

The product of its digits is 1680, while the sum is 26.

The square root of 12265217 is about 3502.1731824683. The cubic root of 12265217 is about 230.6172268197.

The spelling of 12265217 in words is "twelve million, two hundred sixty-five thousand, two hundred seventeen".