13,725
13,725 is a composite number, odd.
13,725 (thirteen thousand seven hundred twenty-five) is an odd 5-digit number. It is a composite number with 18 divisors, and factors as 3² × 5² × 61. Written other ways, in hexadecimal, 0x359D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 18
- Digit product
- 210
- Digital root
- 9
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 52,731
- Recamán's sequence
- a(4,138) = 13,725
- Square (n²)
- 188,375,625
- Cube (n³)
- 2,585,455,453,125
- Divisor count
- 18
- σ(n) — sum of divisors
- 24,986
- φ(n) — Euler's totient
- 7,200
- Sum of prime factors
- 77
Primality
Prime factorization: 3 2 × 5 2 × 61
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,725 = [117; (6, 1, 1, 58, 26, 58, 1, 1, 6, 234)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- thirteen thousand seven hundred twenty-five
- Ordinal
- 13725th
- Binary
- 11010110011101
- Octal
- 32635
- Hexadecimal
- 0x359D
- Base64
- NZ0=
- One's complement
- 51,810 (16-bit)
- Scientific notation
- 1.3725 × 10⁴
- As a duration
- 13,725 s = 3 hours, 48 minutes, 45 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιγψκεʹ
- Mayan (base 20)
- 𝋡·𝋮·𝋦·𝋥
- Chinese
- 一萬三千七百二十五
- Chinese (financial)
- 壹萬參仟柒佰貳拾伍
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,725 = 0
- e — Euler's number (e)
- Digit 13,725 = 1
- φ — Golden ratio (φ)
- Digit 13,725 = 1
- √2 — Pythagoras's (√2)
- Digit 13,725 = 6
- ln 2 — Natural log of 2
- Digit 13,725 = 5
- γ — Euler-Mascheroni (γ)
- Digit 13,725 = 0
Also seen as
UTF-8 encoding: E3 96 9D (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.53.157.
- Address
- 0.0.53.157
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.53.157
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,725 Hz is closest to:
- Concert pitch (A4 = 440 Hz): A9 (14080 Hz, -44¢)
- Scientific pitch (C4 = 256 Hz): A9 (13777.2 Hz, -7¢)
- Baroque pitch (A4 = 415 Hz): A♯9 (14069.7 Hz, -43¢)
The digit sequence 13725 first appears in π at position 16,973 of the decimal expansion (the 16,973ordinal-suffix:rd 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.