25142871 has 16 divisors (see below), whose sum is σ = 38003840. Its totient is φ = 14657760.

The previous prime is 25142863. The next prime is 25142893. The reversal of 25142871 is 17824152.

It is not a de Polignac number, because 25142871 - 2³ = 25142863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25142851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16225 + ... + 17706.

It is an arithmetic number, because the mean of its divisors is an integer number (2375240).

Almost surely, 2^25142871 is an apocalyptic number.

25142871 is a deficient number, since it is larger than the sum of its proper divisors (12860969).

25142871 is a wasteful number, since it uses less digits than its factorization.

25142871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33966.

The product of its digits is 4480, while the sum is 30.

The square root of 25142871 is about 5014.2667459959. The cubic root of 25142871 is about 292.9577258878.

The spelling of 25142871 in words is "twenty-five million, one hundred forty-two thousand, eight hundred seventy-one".