25908878 has 4 divisors (see below), whose sum is σ = 38863320. Its totient is φ = 12954438.

The previous prime is 25908871. The next prime is 25908907. The reversal of 25908878 is 87880952.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25908871) by changing a digit.

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 as a sum of consecutive naturals, namely, 6477218 + ... + 6477221.

It is an arithmetic number, because the mean of its divisors is an integer number (9715830).

Almost surely, 2^25908878 is an apocalyptic number.

25908878 is a deficient number, since it is larger than the sum of its proper divisors (12954442).

25908878 is a wasteful number, since it uses less digits than its factorization.

25908878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12954441.

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 25908878 is about 5090.0764237878. The cubic root of 25908878 is about 295.9031138351.

The spelling of 25908878 in words is "twenty-five million, nine hundred eight thousand, eight hundred seventy-eight".