yes 
So many cats - So few recipes!
Age is of no importance,
unless you are a cheese!
It will show up as "x25 Reward Merits" in character email list. Each time you claim the reward merits you get 25 merits. So yes, 100 merits will give you a quantity of 4 at 25 merits each.
Doing it that way lets players assign them to different characters since once claimed Reward Merits are not tradeable.
If I open a Super Pack and get a card for 100 Reward Merits, how will that show up in the list of items to be claimed? Does it come through as 4 lots of 25 merits?
"If there's anything worse than being sacrificed, it's being sacrificed incompetantly."