20225490469 has 2 divisors, whose sum is σ = 20225490470. Its totient is φ = 20225490468.

The previous prime is 20225490463. The next prime is 20225490511. The reversal of 20225490469 is 96409452202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17028945025 + 3196545444 = 130495^2 + 56538^2 .

It is a cyclic number.

It is not a de Polignac number, because 20225490469 - 2⁹ = 20225489957 is a prime.

It is a super-3 number, since 3×20225490469³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20225490463) 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 as a sum of consecutive naturals, namely, 10112745234 + 10112745235.

It is an arithmetic number, because the mean of its divisors is an integer number (10112745235).

Almost surely, 2^20225490469 is an apocalyptic number.

It is an amenable number.

20225490469 is a deficient number, since it is larger than the sum of its proper divisors (1).

20225490469 is an equidigital number, since it uses as much as digits as its factorization.

20225490469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 20225490469 in words is "twenty billion, two hundred twenty-five million, four hundred ninety thousand, four hundred sixty-nine".