Is 625 is a composite number or not ?
- As we already know that, the number having factors 1 and the number itself is the prime number.
- And numbers having more than these two factors are the composite numbers.
- To check whether the number 625 is composite or not first we have to find its factors.
Contents
Factors of 625:
- If we have taken numbers from 1, 2, 3…for checking factors of 625, we found that 625 has factors 1, 5, 25, 125 and 625. Hence, we must say that 625 is a composite number.
- Thus, 625 is the composite number.
- If we multiply 625 by 1, 2, 3 then we get the multiples of 625 which are 625, 1250 and so on.
625 is a Composite number or Prime number
About the number 625:
- 625 has more than two factors which are 1, 5, 25, 125 and 625 and hence it is the composite number.
- 625 is the odd composite number and it is the perfect square also.
- If we divide 625 by 1, 5, 25, 125 and 625 then we get remainder as zero. Hence, 1, 5, 25, 125 and 625 are the factors of 625.
Note:
- 625 is the perfect square.
- Factors of 625: 1, 5, 25, 125 and 625
- Prime factors of 625: 5
Conclusion:
- 625 is the composite number which has factors 1, 5, 25, 125 and 625.
- And hence, 625 is not the prime number.
Multiple Choice Questions:
1) 625 is a
a) odd number
b) Prime number
c) Composite number
d) Both a and c
Ans: d) both a and c
2) The prime factors of a composite number 625 are
a) 1
b) 5
c) 1, 25, 125 and 625
d) 1, 5, 25, 125 and 625
Ans: b) 5
3) 625 is the odd composite number because
a) It has factors 1, 5, 25, 125 and 625
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c