Properties of the Number -1265

Two Hundred Sixty-Five

Basics

Value: -1266 → -1265 → -1264

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 5 × 11 × 23

Divisors: 1, 5, 11, 23, 55, 115, 253, 1265

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011110001

Octal: -2361

Duodecimal: -895

Hexadecimal: -4f1

Square: 1600225

Square Root: 35.566838487557476

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

Triangle, read by rows, equal to the right-hand side of the triangle A084610, with row n listing the coefficients of (1+x-x²)ⁿ: T(n,k) = [x^n+k] (1+x-x²)ⁿ, for n>=k>=0. A104505

Inverse binomial transform of A026007. A294503

a(n) = -(n - 4)*(n - 5)*(n - 12)/6. A167541

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of min{i(j+1),j(i+1)} (A203996). A203997

Expansion of ∏_k>=1 (1 - x^k)²³. A10829

Inverse of Riordan array (1/(1-x)³, x/(1-x)³). A127894

Expansion of 1/((1 + x³ - x⁴)*(1 - x)). A177825

Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of 1/(∑_j>=0 (j!)^k * x^j). A306629

Determinant of the n X n matrix with (i,j)-entry equal to 1 or 0 according as |i-j| is prime or not. A228638

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 211", based on the 5-celled von Neumann neighborhood. A270900