Is 1625 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 1625 is composite or not first we have to find its factors.
Contents
Factors of 1625:
- If we have taken numbers from 1, 2, 3…for checking factors of 1625, we found that 1625 has factors 1, 5, 13, 25, 65, 125, 325 and 1625. Hence, we must say that 1625 is a composite number.
- Thus, 1625 is the composite number.
- If we multiply 1625 by 1, 2, 3 then we get the multiples of 1625 which are 1625, 3250 and so on.
1625 is a Composite number or Prime number
About the number 1625:
- 1625 has more than two factors which are 1, 5, 13, 25, 65, 125, 325 and 1625 and hence it is the composite number.
- 1625 is the odd composite number and it is not the perfect square also.
- If we divide 1625 by 1, 5, 13, 25, 65, 125, 325 and 1625 then we get remainder as zero. Hence, 1, 5, 13, 25, 65, 125, 325 and 1625 are the factors of 1625
Note:
- 1625 is not the perfect square.
- Factors of 1625: 1, 5, 13, 25, 65, 125, 325 and 1625
- Prime factors of 1625: 5, 13
Conclusion:
- 1625 is the composite number which has factors 1, 5, 13, 25, 65, 125, 325 and 1625.
- And hence, 1625 is not the prime number.
Multiple Choice Questions:
1) 1625 is a
a) Even number
b) Prime number
c) Composite number
d) Both a and c
Ans: c) composite number
2) The non-prime factors of a composite number 1625 are
a) 1
b) 5, 13
c) 1, 25, 65, 125, 325 and 1625
d) 1, 5, 13, 25, 65, 125, 325 and 1625
Ans: b) 1, 25, 65, 125, 325 and 1625
3) 1625 is the odd composite number because
a) It has factors 1, 5, 13, 25, 65, 125, 325 and 1625
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all