25222022252 has 72 divisors (see below), whose sum is σ = 51683433984. Its totient is φ = 10738441728.

The previous prime is 25222022173. The next prime is 25222022261.

It is a happy number.

25222022252 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25297418 + ... + 25298414.

It is an arithmetic number, because the mean of its divisors is an integer number (717825472).

Almost surely, 2^25222022252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25222022252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25841716992).

25222022252 is an abundant number, since it is smaller than the sum of its proper divisors (26461411732).

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

25222022252 is a wasteful number, since it uses less digits than its factorization.

25222022252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

It can be divided in two parts, 252220 and 22252, that added together give a palindrome (274472).

The spelling of 25222022252 in words is "twenty-five billion, two hundred twenty-two million, twenty-two thousand, two hundred fifty-two".