12485645 has 4 divisors (see below), whose sum is σ = 14982780. Its totient is φ = 9988512.

The previous prime is 12485617. The next prime is 12485647. The reversal of 12485645 is 54658421.

12485645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54658421 = 19 ⋅2876759.

It can be written as a sum of positive squares in 2 ways, for example, as 9815689 + 2669956 = 3133^2 + 1634^2 .

It is a cyclic number.

It is not a de Polignac number, because 12485645 - 2¹⁰ = 12484621 is a prime.

It is a super-3 number, since 3×12485645³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12485647) 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 3 ways as a sum of consecutive naturals, for example, 1248560 + ... + 1248569.

It is an arithmetic number, because the mean of its divisors is an integer number (3745695).

Almost surely, 2^12485645 is an apocalyptic number.

It is an amenable number.

12485645 is a deficient number, since it is larger than the sum of its proper divisors (2497135).

12485645 is an equidigital number, since it uses as much as digits as its factorization.

12485645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497134.

The product of its digits is 38400, while the sum is 35.

The square root of 12485645 is about 3533.5032191863. The cubic root of 12485645 is about 231.9905676407.

The spelling of 12485645 in words is "twelve million, four hundred eighty-five thousand, six hundred forty-five".