25897 has 8 divisors (see below), whose sum is σ = 28800. Its totient is φ = 23184.

The previous prime is 25889. The next prime is 25903. The reversal of 25897 is 79852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25897 - 2³ = 25889 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (25847) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 528 + ... + 574.

It is an arithmetic number, because the mean of its divisors is an integer number (3600).

2²⁵⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

25897 is a deficient number, since it is larger than the sum of its proper divisors (2903).

25897 is a wasteful number, since it uses less digits than its factorization.

25897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95.

The product of its digits is 5040, while the sum is 31.

The square root of 25897 is about 160.9254485779. The cubic root of 25897 is about 29.5857887710.

The spelling of 25897 in words is "twenty-five thousand, eight hundred ninety-seven".