25493871 has 16 divisors (see below), whose sum is σ = 37870560. Its totient is φ = 15146880.

The previous prime is 25493869. The next prime is 25493887. The reversal of 25493871 is 17839452.

It is not a de Polignac number, because 25493871 - 2¹ = 25493869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25493861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10140 + ... + 12401.

It is an arithmetic number, because the mean of its divisors is an integer number (2366910).

Almost surely, 2^25493871 is an apocalyptic number.

25493871 is a deficient number, since it is larger than the sum of its proper divisors (12376689).

25493871 is a wasteful number, since it uses less digits than its factorization.

25493871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22586.

The product of its digits is 60480, while the sum is 39.

The square root of 25493871 is about 5049.1455712823. The cubic root of 25493871 is about 294.3146822653.

The spelling of 25493871 in words is "twenty-five million, four hundred ninety-three thousand, eight hundred seventy-one".