12500273257 has 2 divisors, whose sum is σ = 12500273258. Its totient is φ = 12500273256.

The previous prime is 12500273207. The next prime is 12500273273. The reversal of 12500273257 is 75237200521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11120967936 + 1379305321 = 105456^2 + 37139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12500273257 is a prime.

It is not a weakly prime, because it can be changed into another prime (12500273207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250136628 + 6250136629.

It is an arithmetic number, because the mean of its divisors is an integer number (6250136629).

Almost surely, 2^12500273257 is an apocalyptic number.

It is an amenable number.

12500273257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12500273257 is an equidigital number, since it uses as much as digits as its factorization.

12500273257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29400, while the sum is 34.

Adding to 12500273257 its reverse (75237200521), we get a palindrome (87737473778).

The spelling of 12500273257 in words is "twelve billion, five hundred million, two hundred seventy-three thousand, two hundred fifty-seven".