12989125 has 8 divisors (see below), whose sum is σ = 16210584. Its totient is φ = 10391200.

The previous prime is 12989117. The next prime is 12989131. The reversal of 12989125 is 52198921.

It can be written as a sum of positive squares in 4 ways, for example, as 1846881 + 11142244 = 1359^2 + 3338^2 .

It is not a de Polignac number, because 12989125 - 2³ = 12989117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 51832 + ... + 52081.

It is an arithmetic number, because the mean of its divisors is an integer number (2026323).

Almost surely, 2^12989125 is an apocalyptic number.

It is an amenable number.

12989125 is a deficient number, since it is larger than the sum of its proper divisors (3221459).

12989125 is an equidigital number, since it uses as much as digits as its factorization.

12989125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103928 (or 103918 counting only the distinct ones).

The product of its digits is 12960, while the sum is 37.

The square root of 12989125 is about 3604.0428687794. The cubic root of 12989125 is about 235.0678844173.

The spelling of 12989125 in words is "twelve million, nine hundred eighty-nine thousand, one hundred twenty-five".