22225005525121 has 6 divisors (see below), whose sum is σ = 25853577855810. Its totient is φ = 19050004735776.

The previous prime is 22225005525109. The next prime is 22225005525181. The reversal of 22225005525121 is 12152550052222.

It can be written as a sum of positive squares in only one way, i.e., 14437758087025 + 7787247438096 = 3799705^2 + 2790564^2 .

It is not a de Polignac number, because 22225005525121 - 2⁵ = 22225005525089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22225005525181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 226785770616 + ... + 226785770713.

It is an arithmetic number, because the mean of its divisors is an integer number (4308929642635).

Almost surely, 2^{22225005525121} is an apocalyptic number.

It is an amenable number.

22225005525121 is a deficient number, since it is larger than the sum of its proper divisors (3628572330689).

22225005525121 is an equidigital number, since it uses as much as digits as its factorization.

22225005525121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453571541343 (or 453571541336 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 22225005525121 its reverse (12152550052222), we get a palindrome (34377555577343).

The spelling of 22225005525121 in words is "twenty-two trillion, two hundred twenty-five billion, five million, five hundred twenty-five thousand, one hundred twenty-one".