25040452044140 has 96 divisors (see below), whose sum is σ = 57074947925184. Its totient is φ = 9173126799360.

The previous prime is 25040452044053. The next prime is 25040452044161. The reversal of 25040452044140 is 4144025404052.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25040452044140.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64313732 + ... + 64701908.

It is an arithmetic number, because the mean of its divisors is an integer number (594530707554).

Almost surely, 2^{25040452044140} is an apocalyptic number.

25040452044140 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 25040452044140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28537473962592).

25040452044140 is an abundant number, since it is smaller than the sum of its proper divisors (32034495881044).

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

25040452044140 is a wasteful number, since it uses less digits than its factorization.

25040452044140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390147 (or 390145 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 35.

Adding to 25040452044140 its reverse (4144025404052), we get a palindrome (29184477448192).

The spelling of 25040452044140 in words is "twenty-five trillion, forty billion, four hundred fifty-two million, forty-four thousand, one hundred forty".