25222051020221 has 48 divisors (see below), whose sum is σ = 30212737663680. Its totient is φ = 20808591068160.

The previous prime is 25222051020211. The next prime is 25222051020227. The reversal of 25222051020221 is 12202015022252.

It is not a de Polignac number, because 25222051020221 - 2¹⁰ = 25222051019197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25222051020227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118945190 + ... + 119157048.

It is an arithmetic number, because the mean of its divisors is an integer number (629432034660).

Almost surely, 2^{25222051020221} is an apocalyptic number.

It is an amenable number.

25222051020221 is a deficient number, since it is larger than the sum of its proper divisors (4990686643459).

25222051020221 is a wasteful number, since it uses less digits than its factorization.

25222051020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212702 (or 212673 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 25222051020221 its reverse (12202015022252), we get a palindrome (37424066042473).

The spelling of 25222051020221 in words is "twenty-five trillion, two hundred twenty-two billion, fifty-one million, twenty thousand, two hundred twenty-one".