Properties of the Number -3425

Four Hundred Twenty-Five

Basics

Value: -3426 → -3425 → -3424

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 5 ² × 137

Divisors: 1, 5, 25, 137, 685, 3425

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -110101100001

Octal: -6541

Duodecimal: -1B95

Hexadecimal: -d61

Square: 11730625

Square Root: 58.52349955359813

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>=1 1/(1 + x^k)^k*(2·k-1). A295121

G.f. A(x) satisfies: A(x) = x - x² * exp(A(x) + A(x²)/2 + A(x³)/3 + A(x⁴)/4 + ...). A363062

Set partitions without singletons: number of partitions of an n-set into blocks of size > 1. Also number of cyclically spaced (or feasible) partitions. A296

Triangle read by rows: T(n,k) is the number of partitions of an n-set having k singleton blocks (0<=k<=n). A124323

a(n) = n*(11·n - 1)/2. A22268

Difference array of Bell numbers A000110 read by antidiagonals. A106436

Numbers which converge to 2592 under repeated application of the powertrain map of A133500. A135384

T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302224

T(n,k)=Number of nXk 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4. A241306

A046802(x,y) --> A046802(x,y+1), transform of e.g.f. for the graded number of positroids of the totally nonnegative Grassmannians G+(k,n); enumerates faces of the stellahedra. A248727