25804678 has 4 divisors (see below), whose sum is σ = 38707020. Its totient is φ = 12902338.

The previous prime is 25804663. The next prime is 25804721. The reversal of 25804678 is 87640852.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 25804678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6451168 + ... + 6451171.

It is an arithmetic number, because the mean of its divisors is an integer number (9676755).

Almost surely, 2^25804678 is an apocalyptic number.

25804678 is a deficient number, since it is larger than the sum of its proper divisors (12902342).

25804678 is a wasteful number, since it uses less digits than its factorization.

25804678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12902341.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 25804678 is about 5079.8305089835. The cubic root of 25804678 is about 295.5058943723.

The spelling of 25804678 in words is "twenty-five million, eight hundred four thousand, six hundred seventy-eight".