25505308055077 has 4 divisors (see below), whose sum is σ = 25532412527916. Its totient is φ = 25478203582240.

The previous prime is 25505308055053. The next prime is 25505308055081. The reversal of 25505308055077 is 77055080350552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5615411738596 + 19889896316481 = 2369686^2 + 4459809^2 .

It is a cyclic number.

It is not a de Polignac number, because 25505308055077 - 2¹⁵ = 25505308022309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25505608055077) 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 in 3 ways as a sum of consecutive naturals, for example, 13552235008 + ... + 13552236889.

It is an arithmetic number, because the mean of its divisors is an integer number (6383103131979).

Almost surely, 2^{25505308055077} is an apocalyptic number.

It is an amenable number.

25505308055077 is a deficient number, since it is larger than the sum of its proper divisors (27104472839).

25505308055077 is an equidigital number, since it uses as much as digits as its factorization.

25505308055077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27104472838.

The product of its (nonzero) digits is 7350000, while the sum is 52.

The spelling of 25505308055077 in words is "twenty-five trillion, five hundred five billion, three hundred eight million, fifty-five thousand, seventy-seven".