25142 has 8 divisors (see below), whose sum is σ = 40656. Its totient is φ = 11592.

The previous prime is 25127. The next prime is 25147. The reversal of 25142 is 24152.

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

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 25142.

It is not an unprimeable number, because it can be changed into a prime (25147) 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, 458 + ... + 509.

It is an arithmetic number, because the mean of its divisors is an integer number (5082).

2²⁵¹⁴² is an apocalyptic number.

25142 is a deficient number, since it is larger than the sum of its proper divisors (15514).

25142 is a wasteful number, since it uses less digits than its factorization.

25142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982.

The product of its digits is 80, while the sum is 14.

The square root of 25142 is about 158.5622905990. The cubic root of 25142 is about 29.2954342966.

Adding to 25142 its reverse (24152), we get a palindrome (49294).

Subtracting from 25142 its reverse (24152), we obtain a triangular number (990 = T₄₄).

The spelling of 25142 in words is "twenty-five thousand, one hundred forty-two".