225625321121 has 4 divisors (see below), whose sum is σ = 238897398852. Its totient is φ = 212353243392.

The previous prime is 225625321091. The next prime is 225625321139. The reversal of 225625321121 is 121123526522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 204064510225 + 21560810896 = 451735^2 + 146836^2 .

It is a cyclic number.

It is not a de Polignac number, because 225625321121 - 2⁶ = 225625321057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225625321021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6636038840 + ... + 6636038873.

It is an arithmetic number, because the mean of its divisors is an integer number (59724349713).

Almost surely, 2^225625321121 is an apocalyptic number.

It is an amenable number.

225625321121 is a deficient number, since it is larger than the sum of its proper divisors (13272077731).

225625321121 is a wasteful number, since it uses less digits than its factorization.

225625321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13272077730.

The product of its digits is 14400, while the sum is 32.

Adding to 225625321121 its reverse (121123526522), we get a palindrome (346748847643).

The spelling of 225625321121 in words is "two hundred twenty-five billion, six hundred twenty-five million, three hundred twenty-one thousand, one hundred twenty-one".