45 vs forty-five

45

noun

  • Donald Trump, as the forty-fifth president of the United States. 

  • A gramophone record played at 45 revolutions per minute. 

forty-five

num

  • Cardinal number after forty-four and before forty-six. 

noun

  • A .45-caliber firearm. 

How often have the words 45 and forty-five occurred in a corpus of books? (source: Google Ngram Viewer )