Challenge Sum of sub-numbers

CHALLENGE

⭐🌟CHALLENGE - SUM OF SUB-NUMBERS🏆✨

Find the number whose sum of its sub-numbers gives the initial (input) number.
The sub-numbers of result number are obtained as follows:
1. first sub-number is equal to the first digit of result number,
2. second sub-number = on previous sub-number we add the following digit
3. and so on to the end of all digits.

Note: If it is impossible to find the result, output is like: Impossible!

Any language is welcome!

by LukArToDo

Please enter a positive integer number:

Challenge SumSubNumbers