12916625 has 8 divisors (see below), whose sum is σ = 16120104. Its totient is φ = 10333200.

The previous prime is 12916619. The next prime is 12916627. The reversal of 12916625 is 52661921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14161 + 12902464 = 119^2 + 3592^2 .

It is not a de Polignac number, because 12916625 - 2⁸ = 12916369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12916591 and 12916600.

It is not an unprimeable number, because it can be changed into a prime (12916627) 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 7 ways as a sum of consecutive naturals, for example, 51542 + ... + 51791.

It is an arithmetic number, because the mean of its divisors is an integer number (2015013).

Almost surely, 2^12916625 is an apocalyptic number.

It is an amenable number.

12916625 is a deficient number, since it is larger than the sum of its proper divisors (3203479).

12916625 is an equidigital number, since it uses as much as digits as its factorization.

12916625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103348 (or 103338 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 12916625 is about 3593.9706454004. The cubic root of 12916625 is about 234.6297171489.

The spelling of 12916625 in words is "twelve million, nine hundred sixteen thousand, six hundred twenty-five".