25723331140 has 72 divisors (see below), whose sum is σ = 58536422280. Its totient is φ = 9490950144.

The previous prime is 25723331119. The next prime is 25723331143. The reversal of 25723331140 is 4113332752.

It can be written as a sum of positive squares in 12 ways, for example, as 5690891844 + 20032439296 = 75438^2 + 141536^2 .

It is not an unprimeable number, because it can be changed into a prime (25723331143) 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 23 ways as a sum of consecutive naturals, for example, 8816962 + ... + 8819878.

It is an arithmetic number, because the mean of its divisors is an integer number (813005865).

Almost surely, 2^25723331140 is an apocalyptic number.

25723331140 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 25723331140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29268211140).

25723331140 is an abundant number, since it is smaller than the sum of its proper divisors (32813091140).

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

25723331140 is a wasteful number, since it uses less digits than its factorization.

25723331140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561 (or 5546 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

Adding to 25723331140 its reverse (4113332752), we get a palindrome (29836663892).

The spelling of 25723331140 in words is "twenty-five billion, seven hundred twenty-three million, three hundred thirty-one thousand, one hundred forty".