I attached my Parlay and Round-Robin calculators set up in Excel...I just added a 25-team parlay to it (I already had 2 thru 15-team parlays on there)...
My odds match the 5dimes odds exactly on every parlay on my spreadsheets...
But with my spreadsheets, you can manipulate the juice on every play and you can manipulate the bet amount to see how those changes effect the payout...