25241451222 has 64 divisors (see below), whose sum is σ = 56168017920. Its totient is φ = 7509628800.

The previous prime is 25241451211. The next prime is 25241451247. The reversal of 25241451222 is 22215414252.

It is a self number, because there is not a number n which added to its sum of digits gives 25241451222.

It is a congruent number.

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, 3335479 + ... + 3343037.

It is an arithmetic number, because the mean of its divisors is an integer number (877625280).

Almost surely, 2^25241451222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25241451222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28084008960).

25241451222 is an abundant number, since it is smaller than the sum of its proper divisors (30926566698).

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

25241451222 is a wasteful number, since it uses less digits than its factorization.

25241451222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8989.

The product of its digits is 12800, while the sum is 30.

Adding to 25241451222 its reverse (22215414252), we get a palindrome (47456865474).

The spelling of 25241451222 in words is "twenty-five billion, two hundred forty-one million, four hundred fifty-one thousand, two hundred twenty-two".