25366077811 has 2 divisors, whose sum is σ = 25366077812. Its totient is φ = 25366077810.

The previous prime is 25366077809. The next prime is 25366077823. The reversal of 25366077811 is 11877066352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25366077811 - 2¹ = 25366077809 is a prime.

Together with 25366077809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25366077881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12683038905 + 12683038906.

It is an arithmetic number, because the mean of its divisors is an integer number (12683038906).

Almost surely, 2^25366077811 is an apocalyptic number.

25366077811 is a deficient number, since it is larger than the sum of its proper divisors (1).

25366077811 is an equidigital number, since it uses as much as digits as its factorization.

25366077811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 25366077811 in words is "twenty-five billion, three hundred sixty-six million, seventy-seven thousand, eight hundred eleven".