25430990

Names of 25430990

• Cardinal: 25430990 can be written as Twenty-five million, four hundred thirty thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 2.543099 × 10⁷

Factors of 25430990

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 3764

Divisors of 25430990

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 5 10 13 26 53 65 106 130 265 530 689 1378 3445 3691 6890 7382 18455 36910 47983 95966 195623 239915 391246 479830 978115 1956230 2543099 5086198 12715495 25430990
• Sum of all divisors σ(n): 50240736
• Sum of proper divisors (its aliquot sum) s(n): 24809746
• 25430990 is a deficient number, because the sum of its proper divisors (24809746) is less than itself. Its deficiency is 621244

Bases of 25430990

• Binary: 1100001000000101111001110₂
• Hexadecimal: 0x1840BCE
• Base-36: F52OE

Squares and roots of 25430990

• 25430990 squared (25430990²) is 646735252380100
• 25430990 cubed (25430990³) is 16447117735925799299000
• The square root of 25430990 is 5042.9148317219
• The cube root of 25430990 is 294.0725059115

Scales and comparisons

• 25,430,990 seconds is equal to 42 weeks, 8 hours, 9 minutes, 50 seconds.
• To count from 1 to 25,430,990 would take you about eleven weeks!

  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 25430990 cubic inches would be around 24.5 feet tall.

Recreational maths with 25430990

• 25430990 backwards is 09903452
• The number of decimal digits it has is: 8
• The sum of 25430990's digits is 32
• More coming soon!