25552024220 has 96 divisors (see below), whose sum is σ = 57184807680. Its totient is φ = 9563374080.

The previous prime is 25552024193. The next prime is 25552024229. The reversal of 25552024220 is 2242025552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25552024229) 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, 11597639 + ... + 11599841.

It is an arithmetic number, because the mean of its divisors is an integer number (595675080).

Almost surely, 2^25552024220 is an apocalyptic number.

25552024220 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 25552024220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28592403840).

25552024220 is an abundant number, since it is smaller than the sum of its proper divisors (31632783460).

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

25552024220 is a wasteful number, since it uses less digits than its factorization.

25552024220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595 (or 2593 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 29.

Adding to 25552024220 its reverse (2242025552), we get a palindrome (27794049772).

The spelling of 25552024220 in words is "twenty-five billion, five hundred fifty-two million, twenty-four thousand, two hundred twenty".