25779678 has 8 divisors (see below), whose sum is σ = 51559368. Its totient is φ = 8593224.

The previous prime is 25779673. The next prime is 25779737. The reversal of 25779678 is 87697752.

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

25779678 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25779678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25779673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2148301 + ... + 2148312.

It is an arithmetic number, because the mean of its divisors is an integer number (6444921).

Almost surely, 2^25779678 is an apocalyptic number.

25779678 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.

25779678 is a wasteful number, since it uses less digits than its factorization.

25779678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296618.

The product of its digits is 1481760, while the sum is 51.

The square root of 25779678 is about 5077.3692006786. The cubic root of 25779678 is about 295.4104332005.

The spelling of 25779678 in words is "twenty-five million, seven hundred seventy-nine thousand, six hundred seventy-eight".