2585505 has 16 divisors (see below), whose sum is σ = 4455360. Its totient is φ = 1272768.

The previous prime is 2585491. The next prime is 2585507. The reversal of 2585505 is 5055852.

2585505 = T₁₄₉ + T₁₅₀ + ... + T₂₆₅.

It is not a de Polignac number, because 2585505 - 2¹⁰ = 2584481 is a prime.

It is a super-2 number, since 2×2585505² = 13369672210050, which contains 22 as substring.

It is a Curzon number.

2585505 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2585507) 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, 6435 + ... + 6824.

It is an arithmetic number, because the mean of its divisors is an integer number (278460).

2^2585505 is an apocalyptic number.

It is an amenable number.

2585505 is a deficient number, since it is larger than the sum of its proper divisors (1869855).

2585505 is a wasteful number, since it uses less digits than its factorization.

2585505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13280.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 2585505 is about 1607.9505589414. The cubic root of 2585505 is about 137.2508767334.

The spelling of 2585505 in words is "two million, five hundred eighty-five thousand, five hundred five".