25879818 has 8 divisors (see below), whose sum is σ = 51759648. Its totient is φ = 8626604.

The previous prime is 25879813. The next prime is 25879849. The reversal of 25879818 is 81897852.

It is a sphenic number, since it is the product of 3 distinct primes.

25879818 is an admirable number.

It is a super-3 number, since 3×25879818³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25879813) 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 3 ways as a sum of consecutive naturals, for example, 2156646 + ... + 2156657.

It is an arithmetic number, because the mean of its divisors is an integer number (6469956).

Almost surely, 2^25879818 is an apocalyptic number.

25879818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25879818 is a wasteful number, since it uses less digits than its factorization.

25879818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4313308.

The product of its digits is 322560, while the sum is 48.

The square root of 25879818 is about 5087.2210488635. The cubic root of 25879818 is about 295.7924418430.

The spelling of 25879818 in words is "twenty-five million, eight hundred seventy-nine thousand, eight hundred eighteen".