25528050503 has 4 divisors (see below), whose sum is σ = 25528446888. Its totient is φ = 25527654120.

The previous prime is 25528050467. The next prime is 25528050521. The reversal of 25528050503 is 30505082552.

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 25528050503 - 2¹² = 25528046407 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 (25528058503) 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, 76808 + ... + 238653.

It is an arithmetic number, because the mean of its divisors is an integer number (6382111722).

Almost surely, 2^25528050503 is an apocalyptic number.

25528050503 is a deficient number, since it is larger than the sum of its proper divisors (396385).

25528050503 is an equidigital number, since it uses as much as digits as its factorization.

25528050503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396384.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 25528050503 in words is "twenty-five billion, five hundred twenty-eight million, fifty thousand, five hundred three".