25789678 has 4 divisors (see below), whose sum is σ = 38684520. Its totient is φ = 12894838.

The previous prime is 25789649. The next prime is 25789679. The reversal of 25789678 is 87698752.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25789679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6447418 + ... + 6447421.

It is an arithmetic number, because the mean of its divisors is an integer number (9671130).

Almost surely, 2^25789678 is an apocalyptic number.

25789678 is a deficient number, since it is larger than the sum of its proper divisors (12894842).

25789678 is a wasteful number, since it uses less digits than its factorization.

25789678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12894841.

The product of its digits is 1693440, while the sum is 52.

The square root of 25789678 is about 5078.3538671503. The cubic root of 25789678 is about 295.4486250720.

The spelling of 25789678 in words is "twenty-five million, seven hundred eighty-nine thousand, six hundred seventy-eight".