There is no language. Although having an American or European keyboard would probably help.
You would type in the Hindu-Arabic Numeral ONE (1) followed by the Hindu-Arabic Numeral FIVE (5) followed by the CENT SIGN.
On Windows you would type: 25 Alt 155 .com
On OS X you would type: 25 [option]-$ .com
For details on Hindu-Arabic numerals see:
http://en.wikipedia.org/wiki/Hindu-Arabic_numerals_(system)
Usage:
"Cent amounts between 1 cent and 99 cents are usually indicated by the one or two digits followed by a cent sign, usually the lower-case letter c pierced top to bottom by a forward slash or a vertical line: ¢ (2¢, 99¢
, or by a lower-case letter c on its own (2c, 99c). In the United States and Canada, the first usage is more common, while in Australia, New Zealand and the Eurozone, the second usage is more common. In South Africa only the latter is ever used."
This is an illustration of a legal tender TWENTY FIVE (25) UNITED STATES OF AMERICA CENTS (¢
.