25305555505159 has 2 divisors, whose sum is σ = 25305555505160. Its totient is φ = 25305555505158.

The previous prime is 25305555505157. The next prime is 25305555505259. The reversal of 25305555505159 is 95150555550352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25305555505159 - 2¹ = 25305555505157 is a prime.

It is a super-2 number, since 2×25305555505159² (a number of 28 digits) contains 22 as substring.

Together with 25305555505157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25305555505157) 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, 12652777752579 + 12652777752580.

It is an arithmetic number, because the mean of its divisors is an integer number (12652777752580).

Almost surely, 2^{25305555505159} is an apocalyptic number.

25305555505159 is a deficient number, since it is larger than the sum of its proper divisors (1).

25305555505159 is an equidigital number, since it uses as much as digits as its factorization.

25305555505159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21093750, while the sum is 55.

The spelling of 25305555505159 in words is "twenty-five trillion, three hundred five billion, five hundred fifty-five million, five hundred five thousand, one hundred fifty-nine".