Properties of the Number 2925

Two Thousand Nine Hundred Twenty-Five

Basics

Value: 2924 → 2925 → 2926

Parity: odd

Prime: No

Previous Prime: 2917

Next Prime: 2927

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 ² × 13

Divisors: 1, 3, 5, 9, 13, 15, 25, 39, 45, 65

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: Yes

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Representations

Binary: 101101101101

Octal: 5555

Duodecimal: 1839

Hexadecimal: b6d

Square: 8555625

Square Root: 54.08326913195984

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Tetrahedral (or triangular pyramidal) numbers: a(n) = C(n+2,3) = n*(n+1)*(n+2)/6. A292

a(n) = n*(n² + 1)/2. A6003

a(n) = 1² + 3² + 5² + 7² + ... + (2·n-1)² = n*(4·n² - 1)/3. A447

Mian-Chowla sequence (a B₂ sequence): a(1) = 1; for n>1, a(n) = smallest number > a(n-1) such that the pairwise sums of elements are all distinct. A5282

Partial sums of A299256. A299262

Numbers whose base-2 representation is the juxtaposition of two identical strings. A20330

a(n) = n*(2·n-3). A14107

Dodecahedral numbers: a(n) = n*(3·n - 1)*(3·n - 2)/2. A6566

Expansion of (1+x)/(1-x²)⁴: duplicated tetrahedral numbers. A58187

a(n) = σ(n) * A003961(n), where A003961 shifts the prime factorization of n one step towards larger primes, and σ is the sum of the divisors of n. A341529