12225717 has 24 divisors (see below), whose sum is σ = 20656064. Its totient is φ = 6822144.

The previous prime is 12225709. The next prime is 12225727. The reversal of 12225717 is 71752221.

It is not a de Polignac number, because 12225717 - 2³ = 12225709 is a prime.

It is a super-3 number, since 3×12225717³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225727) 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 in 23 ways as a sum of consecutive naturals, for example, 453 + ... + 4965.

Almost surely, 2^12225717 is an apocalyptic number.

It is an amenable number.

12225717 is a deficient number, since it is larger than the sum of its proper divisors (8430347).

12225717 is a wasteful number, since it uses less digits than its factorization.

12225717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4569 (or 4566 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 12225717 is about 3496.5292791567. The cubic root of 12225717 is about 230.3693938114.

Adding to 12225717 its reverse (71752221), we get a palindrome (83977938).

The spelling of 12225717 in words is "twelve million, two hundred twenty-five thousand, seven hundred seventeen".