25552022040240 has 160 divisors (see below), whose sum is σ = 79553526909120. Its totient is φ = 6784492695552.

The previous prime is 25552022040211. The next prime is 25552022040247. The reversal of 25552022040240 is 4204022025552.

It is not an unprimeable number, because it can be changed into a prime (25552022040247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52830226 + ... + 53311694.

It is an arithmetic number, because the mean of its divisors is an integer number (497209543182).

Almost surely, 2^{25552022040240} is an apocalyptic number.

25552022040240 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 25552022040240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39776763454560).

25552022040240 is an abundant number, since it is smaller than the sum of its proper divisors (54001504868880).

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

25552022040240 is a wasteful number, since it uses less digits than its factorization.

25552022040240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482439 (or 482433 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 33.

Adding to 25552022040240 its reverse (4204022025552), we get a palindrome (29756044065792).

The spelling of 25552022040240 in words is "twenty-five trillion, five hundred fifty-two billion, twenty-two million, forty thousand, two hundred forty".