12625012891 has 4 divisors (see below), whose sum is σ = 12628595952. Its totient is φ = 12621429832.

The previous prime is 12625012867. The next prime is 12625012903. The reversal of 12625012891 is 19821052621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19821052621 = 6997 ⋅2832793.

It is a cyclic number.

It is not a de Polignac number, because 12625012891 - 2¹¹ = 12625010843 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 12625012891.

It is not an unprimeable number, because it can be changed into a prime (12625012811) 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, 1786240 + ... + 1793293.

It is an arithmetic number, because the mean of its divisors is an integer number (3157148988).

Almost surely, 2^12625012891 is an apocalyptic number.

12625012891 is a deficient number, since it is larger than the sum of its proper divisors (3583061).

12625012891 is an equidigital number, since it uses as much as digits as its factorization.

12625012891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3583060.

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 12625012891 in words is "twelve billion, six hundred twenty-five million, twelve thousand, eight hundred ninety-one".