20525942971 has 2 divisors, whose sum is σ = 20525942972. Its totient is φ = 20525942970.

The previous prime is 20525942933. The next prime is 20525942981. The reversal of 20525942971 is 17924952502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20525942971 - 2¹⁷ = 20525811899 is a prime.

It is not a weakly prime, because it can be changed into another prime (20525942981) 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, 10262971485 + 10262971486.

It is an arithmetic number, because the mean of its divisors is an integer number (10262971486).

Almost surely, 2^20525942971 is an apocalyptic number.

20525942971 is a deficient number, since it is larger than the sum of its proper divisors (1).

20525942971 is an equidigital number, since it uses as much as digits as its factorization.

20525942971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 20525942971 in words is "twenty billion, five hundred twenty-five million, nine hundred forty-two thousand, nine hundred seventy-one".