20225490563 has 4 divisors (see below), whose sum is σ = 21415225320. Its totient is φ = 19035755808.

The previous prime is 20225490533. The next prime is 20225490577. The reversal of 20225490563 is 36509452202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36509452202 = 2 ⋅18254726101.

It is a cyclic number.

It is not a de Polignac number, because 20225490563 - 2¹⁰ = 20225489539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20225490533) 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 3 ways as a sum of consecutive naturals, for example, 594867353 + ... + 594867386.

It is an arithmetic number, because the mean of its divisors is an integer number (5353806330).

Almost surely, 2^20225490563 is an apocalyptic number.

20225490563 is a deficient number, since it is larger than the sum of its proper divisors (1189734757).

20225490563 is a wasteful number, since it uses less digits than its factorization.

20225490563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189734756.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 20225490563 in words is "twenty billion, two hundred twenty-five million, four hundred ninety thousand, five hundred sixty-three".