25528872203 has 4 divisors (see below), whose sum is σ = 26218841760. Its totient is φ = 24838902648.

The previous prime is 25528872167. The next prime is 25528872209. The reversal of 25528872203 is 30227882552.

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 25528872203 - 2¹² = 25528868107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25528872209) 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, 344984723 + ... + 344984796.

It is an arithmetic number, because the mean of its divisors is an integer number (6554710440).

Almost surely, 2^25528872203 is an apocalyptic number.

25528872203 is a deficient number, since it is larger than the sum of its proper divisors (689969557).

25528872203 is an equidigital number, since it uses as much as digits as its factorization.

25528872203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689969556.

The product of its (nonzero) digits is 537600, while the sum is 44.

The spelling of 25528872203 in words is "twenty-five billion, five hundred twenty-eight million, eight hundred seventy-two thousand, two hundred three".