It isn't a word and has no defined meaning, therefore it can't be translated into any other language. The word is made up from the last bit of the word 'fantastic' with the product name at the start. It is an advertising method to make you mentally link the product to the concept of 'fanstastic'. You could do the same with lots of other products, eg.
Macdonalds burgers are Mactastic!
Samsung TVs are Samtastic!
Buy this phone....its Phonetastic!
Try these sunbeds....there're Tantastic!
A new perfume guaranteed to attract attention.....its Mantastic!
The very best small commercial vehicle in the world....its Vantastic!
You can't paraphrase these statements - they're just advertising jingles which would be meaningless in any other form.