6500

Properties by base:

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 6 (3 unique) factors are:
2² = 4
5³ = 125
13

Its 24 divisors are:
1
2
4
5
10
13
20
25
26
50
52
65
100
125
130
250
260
325
500
650
1300
1625
3250
6500
Its aliquote sum is:
8788
makeing it a abundant number.

As Unicode codepoint (since version 4.0) this number represents this character:ᥤ TAI LE LETTER I in Tai_Le (Source: https://ucdapi.org/unicode/latest/codepoint/dec/6500); HTML: ᥤ

The number appears at position 21426 of the decimal digits of π surrounded by
05266006982309315777650037807046612647060214 Source: The Pi-Search Page

Computations done with Math::BigInt 1.999811 and Math::Pari 2.030523 based on PARI/GP 2.11.3 (elapsed: 784.743ms; cpu: 68.3509999999999ms)