Because the name itself doesn't describe the contents, I can help you draft a message to send along with it depending on your situation. Here are a few options: Professional / Work Context
Use this if you are documenting the file in a list or report: 1_2574130563.rar Format: RAR Archive (Compressed) Status: Ready for distribution/storage. 1_2574130563.rar
Use this if you are sending the file to a colleague or client: Because the name itself doesn't describe the contents,