25278 has 16 divisors (see below), whose sum is σ = 55296. Its totient is φ = 7640.

The previous prime is 25261. The next prime is 25301. The reversal of 25278 is 87252.

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

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126 + ... + 257.

It is an arithmetic number, because the mean of its divisors is an integer number (3456).

2²⁵²⁷⁸ is an apocalyptic number.

25278 is an abundant number, since it is smaller than the sum of its proper divisors (30018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27648).

25278 is a wasteful number, since it uses less digits than its factorization.

25278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399.

The product of its digits is 1120, while the sum is 24.

The square root of 25278 is about 158.9905657578. The cubic root of 25278 is about 29.3481616947.

It can be divided in two parts, 25 and 278, that added together give a palindrome (303).

The spelling of 25278 in words is "twenty-five thousand, two hundred seventy-eight".