12504641 has 4 divisors (see below), whose sum is σ = 13162800. Its totient is φ = 11846484.

The previous prime is 12504629. The next prime is 12504647. The reversal of 12504641 is 14640521.

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: 14640521 = 7 ⋅2091503.

It is a cyclic number.

It is not a de Polignac number, because 12504641 - 2¹⁸ = 12242497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12504647) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 329051 + ... + 329088.

It is an arithmetic number, because the mean of its divisors is an integer number (3290700).

Almost surely, 2^12504641 is an apocalyptic number.

It is an amenable number.

12504641 is a deficient number, since it is larger than the sum of its proper divisors (658159).

12504641 is an equidigital number, since it uses as much as digits as its factorization.

12504641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658158.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 12504641 is about 3536.1901815372. The cubic root of 12504641 is about 232.1081602784.

The spelling of 12504641 in words is "twelve million, five hundred four thousand, six hundred forty-one".