25,442
25,442 is a composite number, even.
25,442 (twenty-five thousand four hundred forty-two) is an even 5-digit number. It is a composite number with 4 divisors, and factors as 2 × 12,721. Written other ways, in hexadecimal, 0x6362.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 17
- Digit product
- 320
- Digital root
- 8
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 24,452
- Recamán's sequence
- a(37,051) = 25,442
- Square (n²)
- 647,295,364
- Cube (n³)
- 16,468,488,650,888
- Divisor count
- 4
- σ(n) — sum of divisors
- 38,166
- φ(n) — Euler's totient
- 12,720
- Sum of prime factors
- 12,723
Primality
Prime factorization: 2 × 12721
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√25,442 = [159; (1, 1, 45, 13, 1, 5, 1, 1, 2, 1, 1, 3, 1, 3, 1, 2, 2, 6, 1, 1, 22, 3, 1, 158, …)]
Period length 48 — the block in parentheses repeats forever.
Representations
- In words
- twenty-five thousand four hundred forty-two
- Ordinal
- 25442nd
- Binary
- 110001101100010
- Octal
- 61542
- Hexadecimal
- 0x6362
- Base64
- Y2I=
- One's complement
- 40,093 (16-bit)
- Scientific notation
- 2.5442 × 10⁴
- As a duration
- 25,442 s = 7 hours, 4 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵κευμβʹ
- Mayan (base 20)
- 𝋣·𝋣·𝋬·𝋢
- Chinese
- 二萬五千四百四十二
- Chinese (financial)
- 貳萬伍仟肆佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 25,442 = 8
- e — Euler's number (e)
- Digit 25,442 = 6
- φ — Golden ratio (φ)
- Digit 25,442 = 3
- √2 — Pythagoras's (√2)
- Digit 25,442 = 6
- ln 2 — Natural log of 2
- Digit 25,442 = 8
- γ — Euler-Mascheroni (γ)
- Digit 25,442 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 25442, here are decompositions:
- 3 + 25439 = 25442
- 19 + 25423 = 25442
- 31 + 25411 = 25442
- 103 + 25339 = 25442
- 139 + 25303 = 25442
- 181 + 25261 = 25442
- 199 + 25243 = 25442
- 223 + 25219 = 25442
Showing the first eight; more decompositions exist.
UTF-8 encoding: E6 8D A2 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.99.98.
- Address
- 0.0.99.98
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.99.98
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 25442 first appears in π at position 67,464 of the decimal expansion (the 67,464ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.