2560826985 has 16 divisors (see below), whose sum is σ = 4122464064. Its totient is φ = 1357394112.

The previous prime is 2560826981. The next prime is 2560826987. The reversal of 2560826985 is 5896280652.

It is not a de Polignac number, because 2560826985 - 2² = 2560826981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2560826981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521242 + ... + 526131.

It is an arithmetic number, because the mean of its divisors is an integer number (257654004).

Almost surely, 2^2560826985 is an apocalyptic number.

It is an amenable number.

2560826985 is a deficient number, since it is larger than the sum of its proper divisors (1561637079).

2560826985 is a wasteful number, since it uses less digits than its factorization.

2560826985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047544.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The square root of 2560826985 is about 50604.6142658948. The cubic root of 2560826985 is about 1368.1280461135.

The spelling of 2560826985 in words is "two billion, five hundred sixty million, eight hundred twenty-six thousand, nine hundred eighty-five".