The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+025C forms with similar adjacent characters prevents a line break inside it. The glyph can be confused with 3 other glyphs.
The Wikipedia has the following information about this codepoint:
The term Reversed epsilon (U+025CɜLATIN SMALL LETTER REVERSED OPEN E) has multiple uses and may refer to one of the following articles:
In phonetics, it is used to indicate an Open-mid central unrounded vowel
In EU law, it is used to affirm safety standards compliance on some products. See CE mark#Reversed epsilon
Representations
System
Representation (click value to copy)
Nº
604
UTF-8
C9 9C
UTF-16
02 5C
UTF-32
00 00 02 5C
URL-Quoted
%C9%9C
HTML hex reference
ɜ
Wrong windows-1252 Mojibake
ɜ
alias
reversed epsilon
Encoding: EUC_JIS_2004 (hex bytes)
AB B1
Encoding: EUC_JISX0213 (hex bytes)
AB B1
Encoding: GB18030 (hex bytes)
81 30 AC 38
Encoding: ISO2022_JP_2004 (hex bytes)
1B 24 28 51 2B 31 1B 28 42
Encoding: ISO2022_JP_3 (hex bytes)
1B 24 28 4F 2B 31 1B 28 42
Encoding: SHIFT_JIS_2004 (hex bytes)
86 50
Encoding: SHIFT_JISX0213 (hex bytes)
86 50
AGL: Latin-5
uni025C
Adobe Glyph List
eopenreversed
RFC 5137
\u'025C'
Bash and Zsh inside echo -e
\u025C
C and C++
\u025C
C#
\u025C
CSS
\00025C
Excel
=UNICHAR(604)
Go
\u025C
JavaScript
\u025C
Modern JavaScript since ES6
\u{25c}
JSON
\u025C
Java
\u025C
Lua
\u{25C}
Matlab
char(604)
Perl
"\x{25C}"
PHP
\u{25c}
PostgreSQL
U&'\025C'
PowerShell
`u{25C}
Python
\u025C
Ruby
\u{25c}
Rust
\u{25c}
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