2485809 has 10 divisors (see below), whose sum is σ = 3713490. Its totient is φ = 1657152.

The previous prime is 2485807. The next prime is 2485831. The reversal of 2485809 is 9085842.

It can be written as a sum of positive squares in only one way, i.e., 2480625 + 5184 = 1575^2 + 72^2 .

It is not a de Polignac number, because 2485809 - 2¹ = 2485807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2485801) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15264 + ... + 15425.

It is an arithmetic number, because the mean of its divisors is an integer number (371349).

2^2485809 is an apocalyptic number.

It is an amenable number.

2485809 is a deficient number, since it is larger than the sum of its proper divisors (1227681).

2485809 is an equidigital number, since it uses as much as digits as its factorization.

2485809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30701 (or 30692 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 2485809 is about 1576.6448553812. The cubic root of 2485809 is about 135.4635913853.

The spelling of 2485809 in words is "two million, four hundred eighty-five thousand, eight hundred nine".