20202312225 has 12 divisors (see below), whose sum is σ = 33401156336. Its totient is φ = 10774566480.

The previous prime is 20202312199. The next prime is 20202312227. The reversal of 20202312225 is 52221320202.

It is not a de Polignac number, because 20202312225 - 2⁹ = 20202311713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20202312227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134682007 + ... + 134682156.

Almost surely, 2^20202312225 is an apocalyptic number.

20202312225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20202312225 is a deficient number, since it is larger than the sum of its proper divisors (13198844111).

20202312225 is a wasteful number, since it uses less digits than its factorization.

20202312225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269364176 (or 269364171 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 20202312225 its reverse (52221320202), we get a palindrome (72423632427).

The spelling of 20202312225 in words is "twenty billion, two hundred two million, three hundred twelve thousand, two hundred twenty-five".