Minimum quantity and increase with minimum quantity

Question

I would like to have a product with a minimum quantity of 25 and if someone wants to order more and press on the arrow for more it needs to jump to 50, 75 etc.

My product is only available per 25. Is it also possible to update the price per click?

If anythings is unclear, feel free to ask for info!

Answer 1

In This Case Product Qty Increments 25 define.

In Admin Side Open That Product

Catalog > Manage Product > Inventory > Enable Qty Increments

Replace 25 to 1