25942 has 16 divisors (see below), whose sum is σ = 47520. Its totient is φ = 10368.

The previous prime is 25939. The next prime is 25943. The reversal of 25942 is 24952.

It is a happy number.

25942 is nontrivially palindromic in base 8 and base 16.

It is a d-powerful number, because it can be written as 2⁹ + 5³ + 9³ + 4⁷ + 2¹³ .

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184 + ... + 292.

It is an arithmetic number, because the mean of its divisors is an integer number (2970).

2²⁵⁹⁴² is an apocalyptic number.

25942 is a deficient number, since it is larger than the sum of its proper divisors (21578).

25942 is a wasteful number, since it uses less digits than its factorization.

25942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135.

The product of its digits is 720, while the sum is 22.

The square root of 25942 is about 161.0652041876. The cubic root of 25942 is about 29.6029154664.

Adding to 25942 its product of digits (720), we get a palindrome (26662).

Subtracting from 25942 its reverse (24952), we obtain a triangular number (990 = T₄₄).

It can be divided in two parts, 259 and 42, that multiplied together give a triangular number (10878 = T₁₄₇).

The spelling of 25942 in words is "twenty-five thousand, nine hundred forty-two".