Move a specific number of files from a folder to another one (by oldest)

Question

I am currently using this shell to move 25 files to another folder automatically. But It moves files by alphabetical order, that's my main concern. I would like the oldest files to be moved first instead.

i=0
for x in *; do
  if [ "$i" = 25 ]; then break; fi
  mv -- "$x" /my/other/folder/
  i=$((i+1))
done

Thanks!