# 1225

## 1,225 is an odd composite number composed of two prime numbers multiplied together.

What does the number 1225 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 9 divisors.

1225 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of nine divisors.

## Prime factorization of 1225:

### 52 × 72

(5 × 5 × 7 × 7)

See below for interesting mathematical facts about the number 1225 from the Numbermatics database.

### Names of 1225

• Cardinal: 1225 can be written as One thousand, two hundred twenty-five.

### Scientific notation

• Scientific notation: 1.225 × 103

### Factors of 1225

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 12

### Divisors of 1225

• Number of divisors d(n): 9
• Complete list of divisors:
• Sum of all divisors σ(n): 1767
• Sum of proper divisors (its aliquot sum) s(n): 542
• 1225 is a deficient number, because the sum of its proper divisors (542) is less than itself. Its deficiency is 683

### Bases of 1225

• Binary: 100110010012
• Base-36: Y1

### Squares and roots of 1225

• 1225 squared (12252) is 1500625
• 1225 cubed (12253) is 1838265625
• 1225 is a perfect square number. Its square root is 35
• The cube root of 1225 is 10.6998748057

### Scales and comparisons

How big is 1225?
• 1,225 seconds is equal to 20 minutes, 25 seconds.
• To count from 1 to 1,225 would take you about twenty minutes.

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 1225 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1225

• 1225 backwards is 5221
• The number of decimal digits it has is: 4
• The sum of 1225's digits is 10
• More coming soon!