28025252553 has 4 divisors (see below), whose sum is σ = 37367003408. Its totient is φ = 18683501700.

The previous prime is 28025252527. The next prime is 28025252611. The reversal of 28025252553 is 35525252082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28025252553 - 2⁹ = 28025252041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28025252653) 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, 4670875423 + ... + 4670875428.

It is an arithmetic number, because the mean of its divisors is an integer number (9341750852).

Almost surely, 2^28025252553 is an apocalyptic number.

It is an amenable number.

28025252553 is a deficient number, since it is larger than the sum of its proper divisors (9341750855).

28025252553 is an equidigital number, since it uses as much as digits as its factorization.

28025252553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9341750854.

The product of its (nonzero) digits is 240000, while the sum is 39.

The spelling of 28025252553 in words is "twenty-eight billion, twenty-five million, two hundred fifty-two thousand, five hundred fifty-three".