25878857226 has 16 divisors (see below), whose sum is σ = 53427318528. Its totient is φ = 8348018400.

The previous prime is 25878857203. The next prime is 25878857269. The reversal of 25878857226 is 62275887852.

It is a self number, because there is not a number n which added to its sum of digits gives 25878857226.

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, 69566635 + ... + 69567006.

It is an arithmetic number, because the mean of its divisors is an integer number (3339207408).

Almost surely, 2^25878857226 is an apocalyptic number.

25878857226 is an abundant number, since it is smaller than the sum of its proper divisors (27548461302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25878857226 is a wasteful number, since it uses less digits than its factorization.

25878857226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139133677.

The product of its digits is 30105600, while the sum is 60.

The spelling of 25878857226 in words is "twenty-five billion, eight hundred seventy-eight million, eight hundred fifty-seven thousand, two hundred twenty-six".