12506651 has 2 divisors, whose sum is σ = 12506652. Its totient is φ = 12506650.

The previous prime is 12506587. The next prime is 12506677. The reversal of 12506651 is 15660521.

It is an a-pointer prime, because the next prime (12506677) can be obtained adding 12506651 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12506651 - 2⁶ = 12506587 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12506651.

It is not a weakly prime, because it can be changed into another prime (12596651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253325 + 6253326.

It is an arithmetic number, because the mean of its divisors is an integer number (6253326).

Almost surely, 2^12506651 is an apocalyptic number.

12506651 is a deficient number, since it is larger than the sum of its proper divisors (1).

12506651 is an equidigital number, since it uses as much as digits as its factorization.

12506651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 12506651 is about 3536.4743742886. The cubic root of 12506651 is about 232.1205959921.

The spelling of 12506651 in words is "twelve million, five hundred six thousand, six hundred fifty-one".