12511251241 has 2 divisors, whose sum is σ = 12511251242. Its totient is φ = 12511251240.

The previous prime is 12511251227. The next prime is 12511251257. The reversal of 12511251241 is 14215211521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6952057641 + 5559193600 = 83379^2 + 74560^2 .

It is a cyclic number.

It is not a de Polignac number, because 12511251241 - 2⁵ = 12511251209 is a prime.

It is not a weakly prime, because it can be changed into another prime (12511251041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6255625620 + 6255625621.

It is an arithmetic number, because the mean of its divisors is an integer number (6255625621).

Almost surely, 2^12511251241 is an apocalyptic number.

It is an amenable number.

12511251241 is a deficient number, since it is larger than the sum of its proper divisors (1).

12511251241 is an equidigital number, since it uses as much as digits as its factorization.

12511251241 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.

Adding to 12511251241 its reverse (14215211521), we get a palindrome (26726462762).

The spelling of 12511251241 in words is "twelve billion, five hundred eleven million, two hundred fifty-one thousand, two hundred forty-one".