2582490809 has 2 divisors, whose sum is σ = 2582490810. Its totient is φ = 2582490808.

The previous prime is 2582490787. The next prime is 2582490847. The reversal of 2582490809 is 9080942852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2468599225 + 113891584 = 49685^2 + 10672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2582490809 is a prime.

It is not a weakly prime, because it can be changed into another prime (2582490509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1291245404 + 1291245405.

It is an arithmetic number, because the mean of its divisors is an integer number (1291245405).

Almost surely, 2^2582490809 is an apocalyptic number.

It is an amenable number.

2582490809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2582490809 is an equidigital number, since it uses as much as digits as its factorization.

2582490809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 2582490809 is about 50818.2133589917. The cubic root of 2582490809 is about 1371.9752013880.

The spelling of 2582490809 in words is "two billion, five hundred eighty-two million, four hundred ninety thousand, eight hundred nine".