25632878 has 4 divisors (see below), whose sum is σ = 38449320. Its totient is φ = 12816438.

The previous prime is 25632869. The next prime is 25632883. The reversal of 25632878 is 87823652.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6408218 + ... + 6408221.

It is an arithmetic number, because the mean of its divisors is an integer number (9612330).

Almost surely, 2^25632878 is an apocalyptic number.

25632878 is a deficient number, since it is larger than the sum of its proper divisors (12816442).

25632878 is a wasteful number, since it uses less digits than its factorization.

25632878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12816441.

The product of its digits is 161280, while the sum is 41.

The square root of 25632878 is about 5062.8922564084. The cubic root of 25632878 is about 294.8486363201.

The spelling of 25632878 in words is "twenty-five million, six hundred thirty-two thousand, eight hundred seventy-eight".