28283525 has 6 divisors (see below), whose sum is σ = 35071602. Its totient is φ = 22626800.

The previous prime is 28283509. The next prime is 28283539. The reversal of 28283525 is 52538282.

It can be written as a sum of positive squares in 3 ways, for example, as 2401 + 28281124 = 49^2 + 5318^2 .

It is not a de Polignac number, because 28283525 - 2⁴ = 28283509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 565646 + ... + 565695.

It is an arithmetic number, because the mean of its divisors is an integer number (5845267).

Almost surely, 2^28283525 is an apocalyptic number.

28283525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28283525 is a deficient number, since it is larger than the sum of its proper divisors (6788077).

28283525 is a wasteful number, since it uses less digits than its factorization.

28283525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131351 (or 1131346 counting only the distinct ones).

The product of its digits is 38400, while the sum is 35.

The square root of 28283525 is about 5318.2257379694. The cubic root of 28283525 is about 304.6803961964.

The spelling of 28283525 in words is "twenty-eight million, two hundred eighty-three thousand, five hundred twenty-five".