When staking the coins on the CoinPayments platform, I understand that there is a 25% annual return. Do I get the coins paid out monthly or how will that work? Are they automatically paid into my wallet or do I have to do something?

Compounding effect makes a big difference when we're talking large volumes.

Returns paid out daily on 1000 CoinPayments Coins compounded over one year: 1284 CPS
Returns paid out monthly on 1000 CoinPayments Coins compounded over one year: 1281 CPS
Returns paid out yearly on 1000 CoinPayments Coins compounded over one year: : 1250 CPS