25131051040 has 96 divisors (see below), whose sum is σ = 63571541040. Its totient is φ = 9354706944.

The previous prime is 25131051037. The next prime is 25131051041. The reversal of 25131051040 is 4015013152.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4690058256 + 20440992784 = 68484^2 + 142972^2 .

It is not an unprimeable number, because it can be changed into a prime (25131051041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190174 + ... + 293986.

Almost surely, 2^25131051040 is an apocalyptic number.

25131051040 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 25131051040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31785770520).

25131051040 is an abundant number, since it is smaller than the sum of its proper divisors (38440490000).

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

25131051040 is a wasteful number, since it uses less digits than its factorization.

25131051040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103934 (or 103926 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 25131051040 its reverse (4015013152), we get a palindrome (29146064192).

The spelling of 25131051040 in words is "twenty-five billion, one hundred thirty-one million, fifty-one thousand, forty".