25505505041 has 2 divisors, whose sum is σ = 25505505042. Its totient is φ = 25505505040.

The previous prime is 25505505029. The next prime is 25505505043. The reversal of 25505505041 is 14050550552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22696929025 + 2808576016 = 150655^2 + 52996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25505505041 is a prime.

Together with 25505505043, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25505504989 and 25505505007.

It is not a weakly prime, because it can be changed into another prime (25505505043) 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, 12752752520 + 12752752521.

It is an arithmetic number, because the mean of its divisors is an integer number (12752752521).

Almost surely, 2^25505505041 is an apocalyptic number.

It is an amenable number.

25505505041 is a deficient number, since it is larger than the sum of its proper divisors (1).

25505505041 is an equidigital number, since it uses as much as digits as its factorization.

25505505041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25000, while the sum is 32.

The spelling of 25505505041 in words is "twenty-five billion, five hundred five million, five hundred five thousand, forty-one".