28508053325 has 6 divisors (see below), whose sum is σ = 35349986154. Its totient is φ = 22806442640.

The previous prime is 28508053319. The next prime is 28508053331. The reversal of 28508053325 is 52335080582.

It is an interprime number because it is at equal distance from previous prime (28508053319) and next prime (28508053331).

It can be written as a sum of positive squares in 3 ways, for example, as 6230102761 + 22277950564 = 78931^2 + 149258^2 .

It is not a de Polignac number, because 28508053325 - 2¹⁶ = 28507987789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 570161042 + ... + 570161091.

It is an arithmetic number, because the mean of its divisors is an integer number (5891664359).

Almost surely, 2^28508053325 is an apocalyptic number.

28508053325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28508053325 is a deficient number, since it is larger than the sum of its proper divisors (6841932829).

28508053325 is a wasteful number, since it uses less digits than its factorization.

28508053325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140322143 (or 1140322138 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 28508053325 in words is "twenty-eight billion, five hundred eight million, fifty-three thousand, three hundred twenty-five".