12505434241 has 2 divisors, whose sum is σ = 12505434242. Its totient is φ = 12505434240.

The previous prime is 12505434223. The next prime is 12505434247. The reversal of 12505434241 is 14243450521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11349706225 + 1155728016 = 106535^2 + 33996^2 .

It is a cyclic number.

It is not a de Polignac number, because 12505434241 - 2¹¹ = 12505432193 is a prime.

It is not a weakly prime, because it can be changed into another prime (12505434247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6252717120 + 6252717121.

It is an arithmetic number, because the mean of its divisors is an integer number (6252717121).

Almost surely, 2^12505434241 is an apocalyptic number.

It is an amenable number.

12505434241 is a deficient number, since it is larger than the sum of its proper divisors (1).

12505434241 is an equidigital number, since it uses as much as digits as its factorization.

12505434241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 12505434241 its reverse (14243450521), we get a palindrome (26748884762).

The spelling of 12505434241 in words is "twelve billion, five hundred five million, four hundred thirty-four thousand, two hundred forty-one".