12505500550441 has 2 divisors, whose sum is σ = 12505500550442. Its totient is φ = 12505500550440.

The previous prime is 12505500550393. The next prime is 12505500550469. The reversal of 12505500550441 is 14405500550521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8288474018841 + 4217026531600 = 2878971^2 + 2053540^2 .

It is a cyclic number.

It is not a de Polignac number, because 12505500550441 - 2¹¹ = 12505500548393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12505500550441.

It is not a weakly prime, because it can be changed into another prime (12505500556441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6252750275220 + 6252750275221.

It is an arithmetic number, because the mean of its divisors is an integer number (6252750275221).

Almost surely, 2^{12505500550441} is an apocalyptic number.

It is an amenable number.

12505500550441 is a deficient number, since it is larger than the sum of its proper divisors (1).

12505500550441 is an equidigital number, since it uses as much as digits as its factorization.

12505500550441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 12505500550441 in words is "twelve trillion, five hundred five billion, five hundred million, five hundred fifty thousand, four hundred forty-one".