25878848638 has 16 divisors (see below), whose sum is σ = 41525434944. Its totient is φ = 12052730880.

The previous prime is 25878848629. The next prime is 25878848651. The reversal of 25878848638 is 83684887852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3920118 + ... + 3926713.

It is an arithmetic number, because the mean of its divisors is an integer number (2595339684).

Almost surely, 2^25878848638 is an apocalyptic number.

25878848638 is a deficient number, since it is larger than the sum of its proper divisors (15646586306).

25878848638 is a wasteful number, since it uses less digits than its factorization.

25878848638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7846947.

The product of its digits is 165150720, while the sum is 67.

The spelling of 25878848638 in words is "twenty-five billion, eight hundred seventy-eight million, eight hundred forty-eight thousand, six hundred thirty-eight".