20525024503 has 4 divisors (see below), whose sum is σ = 20961727200. Its totient is φ = 20088321808.

The previous prime is 20525024501. The next prime is 20525024521. The reversal of 20525024503 is 30542052502.

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 20525024503 - 2¹ = 20525024501 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 (20525024501) 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, 218351278 + ... + 218351371.

It is an arithmetic number, because the mean of its divisors is an integer number (5240431800).

Almost surely, 2^20525024503 is an apocalyptic number.

20525024503 is a deficient number, since it is larger than the sum of its proper divisors (436702697).

20525024503 is an equidigital number, since it uses as much as digits as its factorization.

20525024503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436702696.

The product of its (nonzero) digits is 12000, while the sum is 28.

The spelling of 20525024503 in words is "twenty billion, five hundred twenty-five million, twenty-four thousand, five hundred three".