21925

Names of 21925

• Cardinal: 21925 can be written as Twenty-one thousand, nine hundred twenty-five.

Scientific notation

• Scientific notation: 2.1925 × 10⁴

Factors of 21925

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 882

Divisors of 21925

• Number of divisors d(n): 6
• Complete list of divisors:
  1 5 25 877 4385 21925
• Sum of all divisors σ(n): 27218
• Sum of proper divisors (its aliquot sum) s(n): 5293
• 21925 is a deficient number, because the sum of its proper divisors (5293) is less than itself. Its deficiency is 16632

Bases of 21925

• Binary: 101010110100101₂
• Hexadecimal: 0x55A5
• Base-36: GX1

Squares and roots of 21925

• 21925 squared (21925²) is 480705625
• 21925 cubed (21925³) is 10539470828125
• The square root of 21925 is 148.0709289497
• The cube root of 21925 is 27.9885156985

Scales and comparisons

• 21,925 seconds is equal to 6 hours, 5 minutes, 25 seconds.
• To count from 1 to 21,925 would take you about six hours.

  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 21925 cubic inches would be around 2.3 feet tall.

Recreational maths with 21925

• 21925 backwards is 52912
• The number of decimal digits it has is: 5
• The sum of 21925's digits is 19
• More coming soon!