My question is based off of this unanswered question on the Adobe forums.
Background: The background behind why I want to do this is because I'm trying to plan the order & time needed to read some PDFs assigned by our teachers weekly. I thought having the page number displayed in Windows Explorer would make it easier to plan/organize myself.
Question:
Why are the page values empty for the PDFs that I'm looking at through Windows Explorer? Is it because the file was created without a page value?

Additional: Also, is there a utility that will add the page value for a PDF file, and is there a way to batch add these values (recursively through a directory)?