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25791

25791 is a positive integer. It is odd and composite, since it can be written as 25791 = 3 × 8597. The factor 8597 is prime, so 25791 is a semiprime and squarefree.

The digit sum of 25791 is 24, which implies divisibility by 3; indeed 25791 ÷ 3 = 8597.

In modular arithmetic, 25791 is congruent to 3 modulo 12 and to 7 modulo 8. It ends

From a purely arithmetic perspective, 25791 has no widely recognized significance beyond typical properties of integers.

It
is
not
divisible
by
9
(since
24
is
not
a
multiple
of
9).
It
is
also
not
divisible
by
2
or
5,
consistent
with
its
ending
digit
of
1.
in
the
digit
1,
so
it
is
congruent
to
1
modulo
10.
These
congruences
reflect
its
divisibility
by
3
and
lack
of
small
even
factors.
It
serves
as
an
example
of
a
semiprime,
being
the
product
of
two
distinct
primes,
and
as
part
of
the
broader
set
of
natural
numbers
used
in
various
mathematical
demonstrations
and
constructions.