20259011 has 2 divisors, whose sum is σ = 20259012. Its totient is φ = 20259010.

The previous prime is 20258993. The next prime is 20259049. The reversal of 20259011 is 11095202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20259011 - 2⁶ = 20258947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20259061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10129505 + 10129506.

It is an arithmetic number, because the mean of its divisors is an integer number (10129506).

Almost surely, 2^20259011 is an apocalyptic number.

20259011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20259011 is an equidigital number, since it uses as much as digits as its factorization.

20259011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 20259011 is about 4501.0011108641. The cubic root of 20259011 is about 272.6085127409.

The spelling of 20259011 in words is "twenty million, two hundred fifty-nine thousand, eleven".