What are the distinguishing characteristics of the name of Allah, Exalted be His Majesty?

The majestic name "Allah" is distinguished by several characteristics, including: being a proper noun for the Divine Essence whose existence is necessary, and that it is the Greatest Name, by which if He is invoked, He responds. It is also the most comprehensive and righteous of Allah's names, indicating the Essence that encompasses all divine attributes. It is the most specific of names, and no one can truly or metaphorically be named with it. All other names are described as being among the names of "Allah."