25496 has 8 divisors (see below), whose sum is σ = 47820. Its totient is φ = 12744.

The previous prime is 25471. The next prime is 25523. The reversal of 25496 is 69452.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1586 + ... + 1601.

2²⁵⁴⁹⁶ is an apocalyptic number.

It is an amenable number.

25496 is a deficient number, since it is larger than the sum of its proper divisors (22324).

25496 is a wasteful number, since it uses less digits than its factorization.

25496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193 (or 3189 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 25496 is about 159.6746692497. The cubic root of 25496 is about 29.4322874803.

Subtracting 25496 from its reverse (69452), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 25496 in words is "twenty-five thousand, four hundred ninety-six".