How many megabytes is one twenty five minute mp4?

The size of a 25-minute MP4 file can vary significantly based on factors like video resolution, bitrate, and compression. Generally, a standard-quality MP4 video might be around 100 to 500 megabytes. For high-definition videos, the size could range from 500 megabytes to over a gigabyte. Therefore, without specific details, it's difficult to provide an exact size.