25912080605 has 18 divisors (see below), whose sum is σ = 31340464974. Its totient is φ = 20566969344.

The previous prime is 25912080589. The next prime is 25912080641. The reversal of 25912080605 is 50608021952.

It can be written as a sum of positive squares in 9 ways, for example, as 10518963844 + 15393116761 = 102562^2 + 124069^2 .

It is not a de Polignac number, because 25912080605 - 2⁴ = 25912080589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 69469199 + ... + 69469571.

It is an arithmetic number, because the mean of its divisors is an integer number (1741136943).

Almost surely, 2^25912080605 is an apocalyptic number.

It is an amenable number.

25912080605 is a deficient number, since it is larger than the sum of its proper divisors (5428384369).

25912080605 is an frugal number, since it uses more digits than its factorization.

25912080605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 25912080605 in words is "twenty-five billion, nine hundred twelve million, eighty thousand, six hundred five".