25 (number)

25 is an odd 2-digits composite number following 24 and preceding 26. In scientific notation, it is written as 2.5 × 10^1. The sum of its digits is 7. It has a total of 2 prime factors and 3 positive divisors. There are 20 positive integers (up to 25) that are relatively prime to 25.

Interesting facts

Basic properties

Name

Name twenty-five

Notation

Scientific notation 2.5 × 10^1
Engineering notation 2.5 × 10^0

Prime Factorization of 25

Prime Factorization 5 × 5

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 5
Product of the distinct prime numbers

The prime factorization of 25 is 5 × 5. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 1, 33, 45, 408, 147, 5084, 8002, 21914, 40655, 382836, 390626, 2054617, 9773720, 60094207, 82577776, 610155939, 644415562, 43732397, 448192857

Basic calculations (n = 25)

Multiplication

n×y
n×2 50
n×3 75
n×4 100
n×5 125

Division

n÷y
n÷2 12.5
n÷3 8.3333333333333
n÷3 6.25
n÷5 5

Exponentiation

ny
n2 625
n3 15625
n4 390625
n5 9765625

Nth Root

y√n
2√n 5
3√n 2.9240177382129
4√n 2.2360679774998
5√n 1.9036539387159

Divisors of 25

1, 5, 25

3 divisors

τ Total Divisors 3
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -24
Sum of the proper positive divisors of n
A Arithmetic Mean 0.33333333333333
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 3
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 25 can be divided by 3 positive divisors. The sum of these divisors (counting 25) is 1, the average is 0.33333333333333.

Base conversion 25

Base System Value
2 Binary 11001
3 Ternary 221
4 Quaternary 121
5 Quinary 100
6 Senary 41
8 Octal 31
10 Decimal 25
12 Duodecimal 21
16 Hexadecimal 19
20 Vigesimal 15
36 Base36 p

Cryptographic Hash Functions

md5 8e296a067a37563370ded05f5a3bf3ec
sha1 f6e1126cedebf23e1463aee73f9df08783640400
sha256 b7a56873cd771f2c446d369b649430b65a756ba278ff97ec81bb6f55b2e73569
sha512 5ef620ffb2ed44b40530c0a880fe6b809bf7cc9ce9f589eb2514bf42cec94ade4491c61da816544aebf1054da3d894fdfa218a9bdf73625cbaa1ea0126a47b71
ripemd-160 b55846384533665d6f9573677bf2829e47160242

25 as geometric shapes

Circle

Radius = n
Diameter 50
Circumference 157.07963267949
Area 1963.4954084936

Sphere

Radius = n
Volume 65449.846949787
Surface area 7853.9816339745
Circumference 157.07963267949

Square

Length = n
Perimeter 100
Area 625
Diagonal 35.355339059327

Cube

Length = n
Surface area 3750
Volume 15625
Space diagonal 43.301270189222

Equilateral Triangle

Length = n
Perimeter 75
Area 270.63293868264
Altitude 21.650635094611

Triangular Pyramid

Length = n
Surface area 270.63293868264
Volume 1841.42390934
Height 11.785113019776