25820377127 has 2 divisors, whose sum is σ = 25820377128. Its totient is φ = 25820377126.

The previous prime is 25820377111. The next prime is 25820377153. The reversal of 25820377127 is 72177302852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25820377127 - 2⁴ = 25820377111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25420377127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12910188563 + 12910188564.

It is an arithmetic number, because the mean of its divisors is an integer number (12910188564).

Almost surely, 2^25820377127 is an apocalyptic number.

25820377127 is a deficient number, since it is larger than the sum of its proper divisors (1).

25820377127 is an equidigital number, since it uses as much as digits as its factorization.

25820377127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 329280, while the sum is 44.

Adding to 25820377127 its reverse (72177302852), we get a palindrome (97997679979).

The spelling of 25820377127 in words is "twenty-five billion, eight hundred twenty million, three hundred seventy-seven thousand, one hundred twenty-seven".