Properties of the Number -10025

Ten Thousand Twenty-Five

Basics

Value: -10026 → -10025 → -10024

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 5 ² × 401

Divisors: 1, 5, 25, 401, 2005, 10025

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011100101001

Octal: -23451

Duodecimal: -5975

Hexadecimal: -2729

Square: 100500625

Square Root: 100.12492197250393

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

Values of n such that L(10) and N(10) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227448

This table (read by rows) shows the coefficients of sum formulas of n-th subfactorial numbers (A000166). The n-th row (n>=1) contains T(i,n) for i=1 to n, where T(i,n) satisfies Subf(n) = ∑_i=1..n T(i,n) * n^n-i. A101559

Number of times the digit 3 appears in the first 10ⁿ digits of π. A99294

Number of times the digit 7 appears in the first 10ⁿ digits of π. A99298

E.g.f. satisfies: A(x - Integral A(x) dx) = x + Integral 4·A(x) dx. A280572

Sum of the third largest parts of the partitions of n into 10 parts. A326596

Numbers m such that m² can be obtained from m by inserting an internal block of (contiguous) digits. A45953

a(n) = 16n² + n. A157474

a(n) = ∑_i=0..n digsum₅(i)³, where digsum₅(i) = A053824(i). A231670

Relative of Hofstadter Q-sequence: a(n) = max(0, n+10000) for n <= 0; a(n) = a(n-a(n-1)) + a(n-a(n-2)) + a(n-a(n-3)) + a(n-a(n-4)) for n > 0. A283889