an ez way to calc the supply of any pow coin with scheduled halvings is just to calc the qty at the end of the first halving and double it.

so this coin has 25 coin blocks, and halves every 1 mln blocks. 25 * 1 mln * 2 = 50 mln = final pow count. note that it will take years to reach the first halving so take that into account as well.