21,025 in words
21,025
twenty-one thousand and twenty-five
21,025 is written twenty-one thousand and twenty-five.
Ways to write it
- As an ordinal
- twenty-one thousand and twenty-fifth
- Expanded form
- 20,000 + 1,000 + 20 + 5
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 0 | 0 |
| tens | 2 | 20 |
| ones | 5 | 5 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 5, 25, 29, 145, 725, 841, 4,205 and 21,025 (9 factors)
- First 10 multiples
- 21,025, 42,050, 63,075, 84,100, 105,125, 126,150, 147,175, 168,200, 189,225, 210,250
- Square
- 21,025 × 21,025 = 442,050,625
- Square root
- 145
- Sum of the digits
- 2 + 1 + 0 + 2 + 5 = 10
- Rounded to the nearest 10
- 21,030
- Rounded to the nearest 100
- 21,000
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,024
- Number after
- 21,026
- In binary
101001000100001
Quick check
What number comes just after 21,025?
Show the answer
21,026
Is 21,025 even or odd?
Show the answer
Odd
What is 21,025 + 10?
Show the answer
21,035
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
Find the missing number in a sequence.Frequently asked questions
How do you write 21,025 in words?
21,025 is written "twenty-one thousand and twenty-five".
Is 21,025 a prime number?
No. 21,025 is a composite number, because it has more than two factors.
What are the factors of 21,025?
The factors of 21,025 are 1, 5, 25, 29, 145, 725, 841, 4,205 and 21,025.