25085777759 has 4 divisors (see below), whose sum is σ = 28669460304. Its totient is φ = 21502095216.

The previous prime is 25085777687. The next prime is 25085777833. The reversal of 25085777759 is 95777758052.

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

It is not a de Polignac number, because 25085777759 - 2²⁴ = 25069000543 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 (25085777359) 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, 1791841262 + ... + 1791841275.

It is an arithmetic number, because the mean of its divisors is an integer number (7167365076).

Almost surely, 2^25085777759 is an apocalyptic number.

25085777759 is a deficient number, since it is larger than the sum of its proper divisors (3583682545).

25085777759 is an equidigital number, since it uses as much as digits as its factorization.

25085777759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3583682544.

The product of its (nonzero) digits is 43218000, while the sum is 62.

The spelling of 25085777759 in words is "twenty-five billion, eighty-five million, seven hundred seventy-seven thousand, seven hundred fifty-nine".