If you need to find your actual 25-character key and the sticker is damaged, you can try using the ShowKeyPlus app from the Microsoft Store to retrieve it from your system's firmware.
I notice the string “windows+home+x15+53886+hot” appears to be a random or mistyped query. It doesn’t correspond to a known Windows feature, shortcut, command, error code, or product key. windows+home+x15+53886+hot