8505

8505 is a natural number that follows 8504 and precedes 8506. In mathematics, it is an odd composite with prime factorization 3^5 × 5 × 7. The digit sum is 18, which makes the number divisible by 9, and it has 24 positive divisors in total. It is not prime and not a perfect square, and its factorization patterns can be used in divisor-counting and modular arithmetic exercises.

In astronomy, 8505 is used as a designation for a minor planet in catalogs maintained by the Minor Planet Center. Minor planets are given sequential numbers once their orbits are well established; some receive names later, while others retain only their numerical designation. The use of 8505 in this context reflects the standard practice of cataloging celestial bodies with unique numeric identifiers alongside provisional designations.

Outside mathematics and astronomy, 8505 may appear as a numeric code in various systems. It can serve as a model or part number in manufacturing, a catalog or part identifier in inventory management, or a reference in standards and technical documentation. As with many four-digit numbers, its significance is determined by the particular domain in which it is used, rather than by any inherent meaning.