25695529860 has 768 divisors, whose sum is σ = 102686588928. Its totient is φ = 4628275200.

The previous prime is 25695529813. The next prime is 25695529877. The reversal of 25695529860 is 6892559652.

It is a self number, because there is not a number n which added to its sum of digits gives 25695529860.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 68888634 + ... + 68889006.

It is an arithmetic number, because the mean of its divisors is an integer number (133706496).

Almost surely, 2^25695529860 is an apocalyptic number.

25695529860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25695529860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51343294464).

25695529860 is an abundant number, since it is smaller than the sum of its proper divisors (76991059068).

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

25695529860 is a wasteful number, since it uses less digits than its factorization.

25695529860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 57.

It can be divided in two parts, 25695 and 529860, that added together give a palindrome (555555).

The spelling of 25695529860 in words is "twenty-five billion, six hundred ninety-five million, five hundred twenty-nine thousand, eight hundred sixty".