12125851 has 2 divisors, whose sum is σ = 12125852. Its totient is φ = 12125850.

The previous prime is 12125849. The next prime is 12125887. The reversal of 12125851 is 15852121.

12125851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (15852121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12125851 - 2¹ = 12125849 is a prime.

Together with 12125849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12125891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6062925 + 6062926.

It is an arithmetic number, because the mean of its divisors is an integer number (6062926).

Almost surely, 2^12125851 is an apocalyptic number.

12125851 is a deficient number, since it is larger than the sum of its proper divisors (1).

12125851 is an equidigital number, since it uses as much as digits as its factorization.

12125851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 800, while the sum is 25.

The square root of 12125851 is about 3482.2192636306. The cubic root of 12125851 is about 229.7404191794.

Adding to 12125851 its reverse (15852121), we get a palindrome (27977972).

The spelling of 12125851 in words is "twelve million, one hundred twenty-five thousand, eight hundred fifty-one".