202243646225 has 12 divisors (see below), whose sum is σ = 251480689920. Its totient is φ = 161344227600.

The previous prime is 202243646221. The next prime is 202243646237. The reversal of 202243646225 is 522646342202.

It is not a de Polignac number, because 202243646225 - 2² = 202243646221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202243646221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11258081 + ... + 11276030.

It is an arithmetic number, because the mean of its divisors is an integer number (20956724160).

Almost surely, 2^202243646225 is an apocalyptic number.

202243646225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

202243646225 is a deficient number, since it is larger than the sum of its proper divisors (49237043695).

202243646225 is a wasteful number, since it uses less digits than its factorization.

202243646225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22534480 (or 22534475 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 38.

Adding to 202243646225 its reverse (522646342202), we get a palindrome (724889988427).

The spelling of 202243646225 in words is "two hundred two billion, two hundred forty-three million, six hundred forty-six thousand, two hundred twenty-five".