12506876257 has 2 divisors, whose sum is σ = 12506876258. Its totient is φ = 12506876256.

The previous prime is 12506876233. The next prime is 12506876269. The reversal of 12506876257 is 75267860521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7357522176 + 5149354081 = 85776^2 + 71759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12506876257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12506876257.

It is not a weakly prime, because it can be changed into another prime (12506876287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253438128 + 6253438129.

It is an arithmetic number, because the mean of its divisors is an integer number (6253438129).

Almost surely, 2^12506876257 is an apocalyptic number.

It is an amenable number.

12506876257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12506876257 is an equidigital number, since it uses as much as digits as its factorization.

12506876257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 12506876257 in words is "twelve billion, five hundred six million, eight hundred seventy-six thousand, two hundred fifty-seven".