20305525003 has 4 divisors (see below), whose sum is σ = 20332349440. Its totient is φ = 20278700568.

The previous prime is 20305524983. The next prime is 20305525013. The reversal of 20305525003 is 30052550302.

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

It is a cyclic number.

It is not a de Polignac number, because 20305525003 - 2⁵ = 20305524971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20305525013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13411083 + ... + 13412596.

It is an arithmetic number, because the mean of its divisors is an integer number (5083087360).

Almost surely, 2^20305525003 is an apocalyptic number.

20305525003 is a deficient number, since it is larger than the sum of its proper divisors (26824437).

20305525003 is an equidigital number, since it uses as much as digits as its factorization.

20305525003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26824436.

The product of its (nonzero) digits is 4500, while the sum is 25.

The spelling of 20305525003 in words is "twenty billion, three hundred five million, five hundred twenty-five thousand, three".