20265844305 has 16 divisors (see below), whose sum is σ = 37057544064. Its totient is φ = 9264385920.

The previous prime is 20265844301. The next prime is 20265844309. The reversal of 20265844305 is 50344856202.

It is an interprime number because it is at equal distance from previous prime (20265844301) and next prime (20265844309).

It is not a de Polignac number, because 20265844305 - 2² = 20265844301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20265844301) 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 15 ways as a sum of consecutive naturals, for example, 96503916 + ... + 96504125.

It is an arithmetic number, because the mean of its divisors is an integer number (2316096504).

Almost surely, 2^20265844305 is an apocalyptic number.

It is an amenable number.

20265844305 is a deficient number, since it is larger than the sum of its proper divisors (16791699759).

20265844305 is a wasteful number, since it uses less digits than its factorization.

20265844305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193008056.

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 20265844305 in words is "twenty billion, two hundred sixty-five million, eight hundred forty-four thousand, three hundred five".