20225071 has 2 divisors, whose sum is σ = 20225072. Its totient is φ = 20225070.

The previous prime is 20225069. The next prime is 20225077. The reversal of 20225071 is 17052202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20225071 - 2¹ = 20225069 is a prime.

Together with 20225069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20225077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10112535 + 10112536.

It is an arithmetic number, because the mean of its divisors is an integer number (10112536).

Almost surely, 2^20225071 is an apocalyptic number.

20225071 is a deficient number, since it is larger than the sum of its proper divisors (1).

20225071 is an equidigital number, since it uses as much as digits as its factorization.

20225071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20225071 is about 4497.2292581099. The cubic root of 20225071 is about 272.4561936147.

Adding to 20225071 its reverse (17052202), we get a palindrome (37277273).

The spelling of 20225071 in words is "twenty million, two hundred twenty-five thousand, seventy-one".