25805081927 has 2 divisors, whose sum is σ = 25805081928. Its totient is φ = 25805081926.

The previous prime is 25805081923. The next prime is 25805081993. The reversal of 25805081927 is 72918050852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25805081927 - 2² = 25805081923 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25805081921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12902540963 + 12902540964.

It is an arithmetic number, because the mean of its divisors is an integer number (12902540964).

Almost surely, 2^25805081927 is an apocalyptic number.

25805081927 is a deficient number, since it is larger than the sum of its proper divisors (1).

25805081927 is an equidigital number, since it uses as much as digits as its factorization.

25805081927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 47.

The spelling of 25805081927 in words is "twenty-five billion, eight hundred five million, eighty-one thousand, nine hundred twenty-seven".