25877 has 4 divisors (see below), whose sum is σ = 26220. Its totient is φ = 25536.

The previous prime is 25873. The next prime is 25889. The reversal of 25877 is 77852.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11236 + 14641 = 106^2 + 121^2 .

It is a cyclic number.

It is not a de Polignac number, because 25877 - 2² = 25873 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25877.

It is not an unprimeable number, because it can be changed into a prime (25873) 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 3 ways as a sum of consecutive naturals, for example, 2 + ... + 227.

It is an arithmetic number, because the mean of its divisors is an integer number (6555).

2²⁵⁸⁷⁷ is an apocalyptic number.

It is an amenable number.

25877 is a deficient number, since it is larger than the sum of its proper divisors (343).

25877 is a wasteful number, since it uses less digits than its factorization.

25877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its digits is 3920, while the sum is 29.

The square root of 25877 is about 160.8632960001. The cubic root of 25877 is about 29.5781705377.

The spelling of 25877 in words is "twenty-five thousand, eight hundred seventy-seven".