25505308055079 has 28 divisors (see below), whose sum is σ = 38285300224696. Its totient is φ = 16983604480752.

The previous prime is 25505308055053. The next prime is 25505308055081. The reversal of 25505308055079 is 97055080350552.

25505308055079 is a `hidden beast` number, since 2 + 5 + 5 + 0 + 5 + 3 + 0 + 80 + 550 + 7 + 9 = 666.

It is not a de Polignac number, because 25505308055079 - 2¹⁷ = 25505307924007 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 (25505308055779) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 19886197 + ... + 21129870.

It is an arithmetic number, because the mean of its divisors is an integer number (1367332150882).

Almost surely, 2^{25505308055079} is an apocalyptic number.

25505308055079 is a deficient number, since it is larger than the sum of its proper divisors (12779992169617).

25505308055079 is an frugal number, since it uses more digits than its factorization.

25505308055079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41016938 (or 41016923 counting only the distinct ones).

The product of its (nonzero) digits is 9450000, while the sum is 54.

The spelling of 25505308055079 in words is "twenty-five trillion, five hundred five billion, three hundred eight million, fifty-five thousand, seventy-nine".