Properties of the Number -3225

Two Hundred Twenty-Five

Basics

Value: -3226 → -3225 → -3224

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 ² × 43

Divisors: 1, 3, 5, 15, 25, 43, 75, 129, 215, 645

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110010011001

Octal: -6231

Duodecimal: -1A49

Hexadecimal: -c99

Square: 10400625

Square Root: 56.789083458002736

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

Expansion of ∏_k>=0 (1-x^4·k+3)^4·k+3. A285213

McKay-Thompson series of class 14a for Monster. A58505

G.f. A(x) satisfies: 1/(1 + x) = A(x)*A(x²)²*A(x³)³*A(x⁴)⁴* ... *A(x^k)^k* ... A307657

Consider n equally spaced points along a line and join every pair of points by a semicircle above the line; a(n) is the number of intersection points. A290447

a(n) = (n+1)*(n² +8·n +6)/6. Number of n-dimensional partitions of 4. Number of terms in 4th derivative of a function composed with itself n times. A8778

Generalized 29-gonal (or icosienneagonal) numbers: m*(27·m - 25)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303815

a(0) = 0, a(1) = 1; a(n) = max { 4·a(k) + a(n-k) | 1 <= k <= n/2 }, for n > 1. A116520

Second 9-gonal (or nonagonal) numbers: a(n) = n*(7·n+5)/2. A179986

Numbers m such that 2^m + m is prime. A52007

Numbers k such that the decimal number 1k is a square. A272671