21265625

21,265,625 is an odd composite number composed of two prime numbers multiplied together.

What does the number 21265625 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 14 divisors.

21265625 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of fourteen divisors.

Prime factorization of 21265625:

5⁶ × 1361

(5 × 5 × 5 × 5 × 5 × 5 × 1361)

See below for interesting mathematical facts about the number 21265625 from the Numbermatics database.

Names of 21265625

Cardinal: 21265625 can be written as Twenty-one million, two hundred sixty-five thousand, six hundred twenty-five.

Scientific notation

Scientific notation: 2.1265625 × 10⁷

Factors of 21265625

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 7
Sum of prime factors: 1366

Divisors of 21265625

Number of divisors d(n): 14
Complete list of divisors:
1 5 25 125 625 1361 3125 6805 15625 34025 170125 850625 4253125 21265625
Sum of all divisors σ(n): 26601222
Sum of proper divisors (its aliquot sum) s(n): 5335597
21265625 is a deficient number, because the sum of its proper divisors (5335597) is less than itself. Its deficiency is 15930028

Bases of 21265625

Binary: 1010001000111110011011001₂
Hexadecimal: 0x1447CD9
Base-36: CNSNT

Squares and roots of 21265625

21265625 squared (21265625²) is 452226806640625
21265625 cubed (21265625³) is 9616885684967041015625
The square root of 21265625 is 4611.4666864241
The cube root of 21265625 is 277.0507841741

Scales and comparisons

How big is 21265625?

21,265,625 seconds is equal to 35 weeks, 1 day, 3 hours, 7 minutes, 5 seconds.
To count from 1 to 21,265,625 would take you about five days!

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
A cube with a volume of 21265625 cubic inches would be around 23.1 feet tall.

Recreational maths with 21265625

21265625 backwards is 52656212
The number of decimal digits it has is: 8
The sum of 21265625's digits is 29
More coming soon!

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The information we have on file for 21265625 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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