Is 1825 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 1825 is composite or not first we have to find its factors.
Contents
Factors of 1825:
- If we have taken numbers from 1, 2, 3…for checking factors of 1825, we found that 1825 has factors 1, 5, 25, 73, 365 and 1825. Hence, we must say that 1825 is a composite number.
- Thus, 1825 is the composite number.
- If we multiply 1825 by 1, 2, 3 then we get the multiples of 1825 which are 1825, 3650 and so on.
1825 is a Composite number or Prime number
About the number 1825:
- 1825 has more than two factors which are 1, 5, 25, 73, 365 and 1825 and hence it is the composite number.
- 1825 is the odd composite number and it is not the perfect square also.
- If we divide 1825 by 1, 5, 25, 73, 365 and 1825 then we get remainder as zero. Hence, 1, 5, 25, 73, 365 and 1825 are the factors of 1825
Note:
- 1825 is not the perfect square.
- Factors of 1825: 1, 5, 25, 73, 365 and 1825
- Prime factors of 1825: 5, 73
Conclusion:
- 1825 is the composite number which has factors 1, 5, 25, 73, 365 and 1825.
- And hence, 1825 is not the prime number.
Multiple Choice Questions:
1) 1825 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 1825 are
a) 1
b) 5, 73
c) 1, 25, 365 and 1825
d) 1, 5, 25, 73, 365 and 1825
Ans: b) 1, 25, 365 and 1825
3) 1825 is the odd composite number because
a) It has factors 1, 5, 25, 73, 365 and 1825
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all