25505063167 has 2 divisors, whose sum is σ = 25505063168. Its totient is φ = 25505063166.

The previous prime is 25505063141. The next prime is 25505063237. The reversal of 25505063167 is 76136050552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25505063167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25505063137) 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, 12752531583 + 12752531584.

It is an arithmetic number, because the mean of its divisors is an integer number (12752531584).

Almost surely, 2^25505063167 is an apocalyptic number.

25505063167 is a deficient number, since it is larger than the sum of its proper divisors (1).

25505063167 is an equidigital number, since it uses as much as digits as its factorization.

25505063167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 40.

The spelling of 25505063167 in words is "twenty-five billion, five hundred five million, sixty-three thousand, one hundred sixty-seven".