25845229180 has 48 divisors (see below), whose sum is σ = 57224674080. Its totient is φ = 9778019328.

The previous prime is 25845229177. The next prime is 25845229181. The reversal of 25845229180 is 8192254852.

It is a self number, because there is not a number n which added to its sum of digits gives 25845229180.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25845229181) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 179344 + ... + 289576.

It is an arithmetic number, because the mean of its divisors is an integer number (1192180710).

Almost surely, 2^25845229180 is an apocalyptic number.

25845229180 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 25845229180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28612337040).

25845229180 is an abundant number, since it is smaller than the sum of its proper divisors (31379444900).

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

25845229180 is a wasteful number, since it uses less digits than its factorization.

25845229180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110878 (or 110876 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 46.

It can be divided in two parts, 25845 and 229180, that added together give a square (255025 = 505²).

The spelling of 25845229180 in words is "twenty-five billion, eight hundred forty-five million, two hundred twenty-nine thousand, one hundred eighty".