It depends on what you plan to use the data for. If you primarily use your device for browsing the web, checking email, and using social media, 25 GB of data should be more than enough for a month. However, if you plan to stream a lot of video or music, play online games, or download large files, 25 GB may not be enough.
In terms of the number of words, 800 words is a relatively small amount of data and should not significantly impact your data usage. It is equivalent to about 3-4 pages of typed text, which is not particularly data-intensive.
Ultimately, it’s important to monitor your data usage throughout the month to ensure you don’t exceed your limit. Many mobile carriers offer tools that allow you to track your data usage in real-time, so be sure to take advantage of these features to avoid unexpected charges.