25868715810 has 128 divisors (see below), whose sum is σ = 72942280704. Its totient is φ = 5749470720.

The previous prime is 25868715787. The next prime is 25868715827. The reversal of 25868715810 is 1851786852.

It is a super-2 number, since 2×25868715810² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1076547 + ... + 1100313.

It is an arithmetic number, because the mean of its divisors is an integer number (569861568).

Almost surely, 2^25868715810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25868715810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36471140352).

25868715810 is an abundant number, since it is smaller than the sum of its proper divisors (47073564894).

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

25868715810 is a wasteful number, since it uses less digits than its factorization.

25868715810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23928.

The product of its (nonzero) digits is 1075200, while the sum is 51.

The spelling of 25868715810 in words is "twenty-five billion, eight hundred sixty-eight million, seven hundred fifteen thousand, eight hundred ten".