2580505 has 8 divisors (see below), whose sum is σ = 3143232. Its totient is φ = 2033328.

The previous prime is 2580497. The next prime is 2580509. The reversal of 2580505 is 5050852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2580505 - 2³ = 2580497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2580505.

It is not an unprimeable number, because it can be changed into a prime (2580509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3517 + ... + 4186.

It is an arithmetic number, because the mean of its divisors is an integer number (392904).

2^2580505 is an apocalyptic number.

It is an amenable number.

2580505 is a deficient number, since it is larger than the sum of its proper divisors (562727).

2580505 is an equidigital number, since it uses as much as digits as its factorization.

2580505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7775.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 2580505 is about 1606.3950323628. The cubic root of 2580505 is about 137.1623450626.

The spelling of 2580505 in words is "two million, five hundred eighty thousand, five hundred five".