20202555225 has 24 divisors (see below), whose sum is σ = 33900097120. Its totient is φ = 10613877120.

The previous prime is 20202555179. The next prime is 20202555227. The reversal of 20202555225 is 52255520202.

It is not a de Polignac number, because 20202555225 - 2¹³ = 20202547033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20202555192 and 20202555201.

It is not an unprimeable number, because it can be changed into a prime (20202555227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2005180 + ... + 2015229.

Almost surely, 2^20202555225 is an apocalyptic number.

20202555225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20202555225 is a deficient number, since it is larger than the sum of its proper divisors (13697541895).

20202555225 is a wasteful number, since it uses less digits than its factorization.

20202555225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020489 (or 4020484 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The spelling of 20202555225 in words is "twenty billion, two hundred two million, five hundred fifty-five thousand, two hundred twenty-five".