20525555311 has 8 divisors (see below), whose sum is σ = 20762315280. Its totient is φ = 20289308928.

The previous prime is 20525555299. The next prime is 20525555317. The reversal of 20525555311 is 11355552502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20525555311 - 2⁵ = 20525555279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525555317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47716 + ... + 208153.

It is an arithmetic number, because the mean of its divisors is an integer number (2595289410).

Almost surely, 2^20525555311 is an apocalyptic number.

20525555311 is a deficient number, since it is larger than the sum of its proper divisors (236759969).

20525555311 is an equidigital number, since it uses as much as digits as its factorization.

20525555311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256793.

The product of its (nonzero) digits is 37500, while the sum is 34.

The spelling of 20525555311 in words is "twenty billion, five hundred twenty-five million, five hundred fifty-five thousand, three hundred eleven".