1225 is an odd 4-digits composite number following 1224
and preceding 1226 . In scientific notation, it is written as 1.225 × 10^3.
The sum of its digits is 10. It has a total of 3 prime factors and 6 positive divisors.
There are 840 positive integers (up to 1225) that are relatively prime to 1225.
1225 has 6 divisors, whose sum is 1482
The reverse of 1225 is 5221
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 4
Sum of Digits 10
Digital Root 1
Name
one thousand two hundred twenty-five
Scientific notation
1.225 × 10^3
Engineering notation
1.225 × 10^3
Prime Factorization
25 × 7 × 7
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
175
Product of the distinct prime numbers
The prime factorization of 1225 is 25 × 7 × 7.
Since it has a total of 3 prime factors.
2 , 9 , 46 , 65 , 174 , 993 , 300 , 7892 , 71055 , 21597 , 503821 , 265798 , 621053 , 8601812 , 59099738 , 62580810 , 848155097 , 372283549 , 4125720218 , 7409179284
n×2
2450
n×3
3675
n×4
4900
n×5
6125
n÷2
612.5
n÷3
408.33333333333
n÷3
306.25
n÷5
245
n2
1500625
n3
1838265625
n4
2251875390625
n5
2758547353515625
2 √n
35
3 √n
10.699874805651
4 √n
5.9160797830996
5 √n
4.1459801431213
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1224
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1225 can be divided by 6 positive divisors.
The sum of these divisors (counting 1225) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
10011001001
3
Ternary
1200101
4
Quaternary
103021
5
Quinary
14400
6
Senary
5401
8
Octal
2311
10
Decimal
1225
12
Duodecimal
861
16
Hexadecimal
4c9
20
Vigesimal
315
36
Base36
y1
md5
25df35de87aa441b88f22a6c2a830a17
sha1
1d32238496df5ae1c9e06aa818f82ca7fac99cd1
sha256
6ecf763ff6e7cef7b47e6611e1bf76fe2608a2e32a97b2d88b083ae1d8d02c82
sha512
64914c8288095eea65ee1929d8ce1b94f750c087a00401b823c40368c08df1f42ac7cdfdd39aca1578f79b93f5f72669ae7bdfeb85239818dde7bb2cf9e9d755
ripemd-160
e1d7fc7758ded1404225a94b1a80428b53c347dd
Diameter
2450
Circumference
7696.902001295
Area
4714352.4757932
Volume
7700109043.7955
Surface area
18857409.903173
Circumference
7696.902001295
Perimeter
4900
Area
1500625
Diagonal
1732.411613907
Surface area
9003750
Volume
1838265625
Space diagonal
2121.7622392719
Perimeter
3675
Area
649789.68577701
Altitude
1060.8811196359
Surface area
649789.68577701
Volume
216641681.50994
Height
577.47053796901