12309125 has 8 divisors (see below), whose sum is σ = 15361944. Its totient is φ = 9847200.

The previous prime is 12309119. The next prime is 12309133. The reversal of 12309125 is 52190321.

It can be written as a sum of positive squares in 4 ways, for example, as 2411809 + 9897316 = 1553^2 + 3146^2 .

It is not a de Polignac number, because 12309125 - 2¹⁶ = 12243589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12309125.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 49112 + ... + 49361.

It is an arithmetic number, because the mean of its divisors is an integer number (1920243).

Almost surely, 2^12309125 is an apocalyptic number.

It is an amenable number.

12309125 is a deficient number, since it is larger than the sum of its proper divisors (3052819).

12309125 is an frugal number, since it uses more digits than its factorization.

12309125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98488 (or 98478 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12309125 is about 3508.4362613563. The cubic root of 12309125 is about 230.8920930519.

Adding to 12309125 its reverse (52190321), we get a palindrome (64499446).

The spelling of 12309125 in words is "twelve million, three hundred nine thousand, one hundred twenty-five".