A note for this and other comments below. Hawking radiation is more violent (energetic) for smaller black holes. Galactic black holes emit radiation at a much smaller temperature (roughly inversely as mass) while tiny black holes are very hot and evaporate quickly in a runaway “explosion”. However, note that this is only the temperature. The surface area of the BH event horizon (which emits the radiation) scales as mass^2 — that should determine the number of photons/particles.