25859257026 has 32 divisors (see below), whose sum is σ = 54107198208. Its totient is φ = 8230584960.

The previous prime is 25859257009. The next prime is 25859257033. The reversal of 25859257026 is 62075295852.

It is a self number, because there is not a number n which added to its sum of digits gives 25859257026.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1106725 + ... + 1129848.

It is an arithmetic number, because the mean of its divisors is an integer number (1690849944).

Almost surely, 2^25859257026 is an apocalyptic number.

25859257026 is an abundant number, since it is smaller than the sum of its proper divisors (28247941182).

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

25859257026 is a wasteful number, since it uses less digits than its factorization.

25859257026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236666.

The product of its (nonzero) digits is 3024000, while the sum is 51.

The spelling of 25859257026 in words is "twenty-five billion, eight hundred fifty-nine million, two hundred fifty-seven thousand, twenty-six".