The alignment of the text will be "left" by default
Explanation:
In Excel or spreadsheet, if any number is entered, it will automatically be aligned to right because right alignment is preferable for the numbers.
In case of any alignment is mentioned in the cell in prior to entering text or if the type of data is changed after or before entering the text, then the text is aligned accordingly.
According to the given scenario, a number "25" is entered and it is converted to text. So a text format will preserve the alignment as entered. By default it will be "left" aligned.