25868172 has 24 divisors (see below), whose sum is σ = 65846592. Its totient is φ = 7838800.

The previous prime is 25868159. The next prime is 25868179. The reversal of 25868172 is 27186852.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25868172.

It is not an unprimeable number, because it can be changed into a prime (25868179) 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 7 ways as a sum of consecutive naturals, for example, 97854 + ... + 98117.

It is an arithmetic number, because the mean of its divisors is an integer number (2743608).

Almost surely, 2^25868172 is an apocalyptic number.

25868172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25868172 is an abundant number, since it is smaller than the sum of its proper divisors (39978420).

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

25868172 is a wasteful number, since it uses less digits than its factorization.

25868172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195989 (or 195987 counting only the distinct ones).

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

The square root of 25868172 is about 5086.0762872769. The cubic root of 25868172 is about 295.7480660076.

The spelling of 25868172 in words is "twenty-five million, eight hundred sixty-eight thousand, one hundred seventy-two".