12585641 has 4 divisors (see below), whose sum is σ = 12604752. Its totient is φ = 12566532.

The previous prime is 12585571. The next prime is 12585649. The reversal of 12585641 is 14658521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14658521 = 23 ⋅637327.

It is a cyclic number.

It is not a de Polignac number, because 12585641 - 2¹⁰ = 12584617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12585598 and 12585607.

It is not an unprimeable number, because it can be changed into a prime (12585649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8531 + ... + 9896.

It is an arithmetic number, because the mean of its divisors is an integer number (3151188).

Almost surely, 2^12585641 is an apocalyptic number.

It is an amenable number.

12585641 is a deficient number, since it is larger than the sum of its proper divisors (19111).

12585641 is an equidigital number, since it uses as much as digits as its factorization.

12585641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19110.

The product of its digits is 9600, while the sum is 32.

The square root of 12585641 is about 3547.6246983017. The cubic root of 12585641 is about 232.6082495884.

The spelling of 12585641 in words is "twelve million, five hundred eighty-five thousand, six hundred forty-one".