2500577805805 has 4 divisors (see below), whose sum is σ = 3000693366972. Its totient is φ = 2000462244640.

The previous prime is 2500577805787. The next prime is 2500577805823. The reversal of 2500577805805 is 5085087750052.

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

It is an interprime number because it is at equal distance from previous prime (2500577805787) and next prime (2500577805823).

It can be written as a sum of positive squares in 2 ways, for example, as 1066173958249 + 1434403847556 = 1032557^2 + 1197666^2 .

It is not a de Polignac number, because 2500577805805 - 2⁹ = 2500577805293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250057780576 + ... + 250057780585.

It is an arithmetic number, because the mean of its divisors is an integer number (750173341743).

Almost surely, 2^{2500577805805} is an apocalyptic number.

It is an amenable number.

2500577805805 is a deficient number, since it is larger than the sum of its proper divisors (500115561167).

2500577805805 is an equidigital number, since it uses as much as digits as its factorization.

2500577805805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500115561166.

The product of its (nonzero) digits is 3920000, while the sum is 52.

The spelling of 2500577805805 in words is "two trillion, five hundred billion, five hundred seventy-seven million, eight hundred five thousand, eight hundred five".