12651251 has 2 divisors, whose sum is σ = 12651252. Its totient is φ = 12651250.

The previous prime is 12651227. The next prime is 12651253. The reversal of 12651251 is 15215621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12651251 - 2⁶ = 12651187 is a prime.

It is a Sophie Germain prime.

Together with 12651253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12651253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6325625 + 6325626.

It is an arithmetic number, because the mean of its divisors is an integer number (6325626).

Almost surely, 2^12651251 is an apocalyptic number.

12651251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12651251 is an equidigital number, since it uses as much as digits as its factorization.

12651251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 23.

The square root of 12651251 is about 3556.8597104750. The cubic root of 12651251 is about 233.0117513276.

Adding to 12651251 its reverse (15215621), we get a palindrome (27866872).

The spelling of 12651251 in words is "twelve million, six hundred fifty-one thousand, two hundred fifty-one".