202123054225 has 12 divisors (see below), whose sum is σ = 265375681164. Its totient is φ = 152186769920.

The previous prime is 202123054193. The next prime is 202123054229. The reversal of 202123054225 is 522450321202.

202123054225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 14050783296 + 188072270929 = 118536^2 + 433673^2 .

It is not a de Polignac number, because 202123054225 - 2⁵ = 202123054193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202123054193 and 202123054202.

It is not an unprimeable number, because it can be changed into a prime (202123054229) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 237791404 + ... + 237792253.

It is an arithmetic number, because the mean of its divisors is an integer number (22114640097).

Almost surely, 2^202123054225 is an apocalyptic number.

202123054225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

202123054225 is a deficient number, since it is larger than the sum of its proper divisors (63252626939).

202123054225 is a wasteful number, since it uses less digits than its factorization.

202123054225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475583684 (or 475583679 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 202123054225 its reverse (522450321202), we get a palindrome (724573375427).

The spelling of 202123054225 in words is "two hundred two billion, one hundred twenty-three million, fifty-four thousand, two hundred twenty-five".