20403125611 has 4 divisors (see below), whose sum is σ = 22257955224. Its totient is φ = 18548296000.

The previous prime is 20403125581. The next prime is 20403125641. The reversal of 20403125611 is 11652130402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20403125581) and next prime (20403125641).

It is a cyclic number.

It is not a de Polignac number, because 20403125611 - 2⁵ = 20403125579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20403125641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927414790 + ... + 927414811.

It is an arithmetic number, because the mean of its divisors is an integer number (5564488806).

Almost surely, 2^20403125611 is an apocalyptic number.

20403125611 is a deficient number, since it is larger than the sum of its proper divisors (1854829613).

20403125611 is a wasteful number, since it uses less digits than its factorization.

20403125611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854829612.

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 20403125611 in words is "twenty billion, four hundred three million, one hundred twenty-five thousand, six hundred eleven".