25862871 has 16 divisors (see below), whose sum is σ = 35216384. Its totient is φ = 16879104.

The previous prime is 25862869. The next prime is 25862911. The reversal of 25862871 is 17826852.

It is not a de Polignac number, because 25862871 - 2¹ = 25862869 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 (25862801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44535 + ... + 45111.

It is an arithmetic number, because the mean of its divisors is an integer number (2201024).

Almost surely, 2^25862871 is an apocalyptic number.

25862871 is a deficient number, since it is larger than the sum of its proper divisors (9353513).

25862871 is a wasteful number, since it uses less digits than its factorization.

25862871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870.

The product of its digits is 53760, while the sum is 39.

The square root of 25862871 is about 5085.5551319399. Note that the first 3 decimals coincide. The cubic root of 25862871 is about 295.7278627040.

The spelling of 25862871 in words is "twenty-five million, eight hundred sixty-two thousand, eight hundred seventy-one".