Properties of the Number 2625

Two Thousand Six Hundred Twenty-Five

Basics

Value: 2624 → 2625 → 2626

Parity: odd

Prime: No

Previous Prime: 2621

Next Prime: 2633

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 ³ × 7

Divisors: 1, 3, 5, 7, 15, 21, 25, 35, 75, 105

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101001000001

Octal: 5101

Duodecimal: 1629

Hexadecimal: a41

Square: 6890625

Square Root: 51.234753829797995

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

Primorial base exp-function: digits in primorial base representation of n become the exponents of successive prime factors whose product a(n) is. A276086

Pentagonal numbers: a(n) = n*(3·n-1)/2. A326

Number of partitions of n into parts each of which is used a different number of times. A98859

Numbers k that divide the (right) concatenation of all numbers <= k written in base 25 (most significant digit on left). A29470

Prime factorization representation of Stern polynomials: a(0) = 1, a(1) = 2, a(2n) = A003961(a(n)), a(2n+1) = a(n)*a(n+1). A260443

Centered octahedral numbers (crystal ball sequence for cubic lattice). A1845

a(n) = C(n,1) + C(n,2) + C(n,3), or n*(n² + 5)/6. A4006

Numbers k such that φ(k) = φ(k+1). A1274

Factorial base exp-function: digits in factorial base representation of n become the exponents of successive prime factors whose product a(n) is. A276076

a(n) = A276086(A276086(n)), where A276086 is the primorial base exp-function. A276087