70976
After 1 and 9 , 225 is the third smallest number " n " for which , where " & sigma ; " is the sum of divisors function and " & phi ; " is Euler 's totient function .
 person: Euler
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Euler 
Answer:
 person: Euler