12696225 has 12 divisors (see below), whose sum is σ = 20991216. Its totient is φ = 6771280.

The previous prime is 12696221. The next prime is 12696227. The reversal of 12696225 is 52269621.

It is not a de Polignac number, because 12696225 - 2² = 12696221 is a prime.

It is a super-2 number, since 2×12696225² = 322388258501250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12696221) 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 11 ways as a sum of consecutive naturals, for example, 84567 + ... + 84716.

It is an arithmetic number, because the mean of its divisors is an integer number (1749268).

Almost surely, 2^12696225 is an apocalyptic number.

12696225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12696225 is a deficient number, since it is larger than the sum of its proper divisors (8294991).

12696225 is a wasteful number, since it uses less digits than its factorization.

12696225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169296 (or 169291 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 12696225 is about 3563.1762516047. The cubic root of 12696225 is about 233.2875363634.

It can be divided in two parts, 12696 and 225, that added together give a palindrome (12921).

The spelling of 12696225 in words is "twelve million, six hundred ninety-six thousand, two hundred twenty-five".