20504525011 has 2 divisors, whose sum is σ = 20504525012. Its totient is φ = 20504525010.

The previous prime is 20504525003. The next prime is 20504525033. The reversal of 20504525011 is 11052540502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20504525011 - 2³ = 20504525003 is a prime.

It is not a weakly prime, because it can be changed into another prime (20504525311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10252262505 + 10252262506.

It is an arithmetic number, because the mean of its divisors is an integer number (10252262506).

Almost surely, 2^20504525011 is an apocalyptic number.

20504525011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20504525011 is an equidigital number, since it uses as much as digits as its factorization.

20504525011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 20504525011 in words is "twenty billion, five hundred four million, five hundred twenty-five thousand, eleven".