25678878 has 8 divisors (see below), whose sum is σ = 51357768. Its totient is φ = 8559624.

The previous prime is 25678853. The next prime is 25678901. The reversal of 25678878 is 87887652.

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

25678878 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 25678878.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2139901 + ... + 2139912.

It is an arithmetic number, because the mean of its divisors is an integer number (6419721).

Almost surely, 2^25678878 is an apocalyptic number.

25678878 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.

25678878 is a wasteful number, since it uses less digits than its factorization.

25678878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4279818.

The product of its digits is 1505280, while the sum is 51.

The square root of 25678878 is about 5067.4330779992. The cubic root of 25678878 is about 295.0249064483.

The spelling of 25678878 in words is "twenty-five million, six hundred seventy-eight thousand, eight hundred seventy-eight".