Is the HP Envy 17-cr0003ca good for photo editing?

Yes for most photo work. The 17.3-inch touchscreen, i7-1260P and 16GB RAM handle editing apps well, though heavy video or 3D work will feel the limits of integrated graphics.

Only light or older titles at modest settings. It uses Intel integrated graphics, not a dedicated gaming GPU, so demanding games will run poorly.

How does it compare with the LG Gram 17?

The Gram 17 is much lighter and lasts longer on battery, while the Envy 17 offers a touchscreen and more storage for the same kind of desk use. Choose the Envy if it stays home, the Gram if you carry it.

Does it have a number pad?

Yes. The keyboard includes a full number pad, which suits spreadsheets and data entry.

The laptop and its power adapter. A stylus and external mouse are not included.

Is 16GB of RAM enough?

For browsing, Office work and photo editing, yes. It is not upgrade-friendly for heavy virtual machines or large video projects, which benefit from 32GB.