12512641 has 4 divisors (see below), whose sum is σ = 12602800. Its totient is φ = 12422484.

The previous prime is 12512639. The next prime is 12512651. The reversal of 12512641 is 14621521.

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.

It is a cyclic number.

It is not a de Polignac number, because 12512641 - 2¹ = 12512639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12512651) 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, 44871 + ... + 45148.

It is an arithmetic number, because the mean of its divisors is an integer number (3150700).

Almost surely, 2^12512641 is an apocalyptic number.

It is an amenable number.

12512641 is a deficient number, since it is larger than the sum of its proper divisors (90159).

12512641 is an equidigital number, since it uses as much as digits as its factorization.

12512641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90158.

The product of its digits is 480, while the sum is 22.

The square root of 12512641 is about 3537.3211615571. The cubic root of 12512641 is about 232.1576477564.

The spelling of 12512641 in words is "twelve million, five hundred twelve thousand, six hundred forty-one".