25498 has 16 divisors (see below), whose sum is σ = 44640. Its totient is φ = 10800.

The previous prime is 25471. The next prime is 25523. The reversal of 25498 is 89452.

It is a happy number.

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

It is an unprimeable number.

25498 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388 + ... + 448.

It is an arithmetic number, because the mean of its divisors is an integer number (2790).

2²⁵⁴⁹⁸ is an apocalyptic number.

25498 is a deficient number, since it is larger than the sum of its proper divisors (19142).

25498 is a wasteful number, since it uses less digits than its factorization.

25498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93.

The product of its digits is 2880, while the sum is 28.

The square root of 25498 is about 159.6809318610. The cubic root of 25498 is about 29.4330570525.

The spelling of 25498 in words is "twenty-five thousand, four hundred ninety-eight".