25831116 has 48 divisors (see below), whose sum is σ = 69888000. Its totient is φ = 8235216.

The previous prime is 25831097. The next prime is 25831129. The reversal of 25831116 is 61113852.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 25831116.

It is an unprimeable number.

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, 2716 + ... + 7683.

It is an arithmetic number, because the mean of its divisors is an integer number (1456000).

Almost surely, 2^25831116 is an apocalyptic number.

It is an amenable number.

25831116 is an abundant number, since it is smaller than the sum of its proper divisors (44056884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25831116 is a wasteful number, since it uses less digits than its factorization.

25831116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10435 (or 10427 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 25831116 is about 5082.4320949719. The cubic root of 25831116 is about 295.6067794166.

Adding to 25831116 its reverse (61113852), we get a palindrome (86944968).

The spelling of 25831116 in words is "twenty-five million, eight hundred thirty-one thousand, one hundred sixteen".