28532025 has 36 divisors (see below), whose sum is σ = 51469548. Its totient is φ = 15108480.

The previous prime is 28532003. The next prime is 28532033. The reversal of 28532025 is 52023582.

It can be written as a sum of positive squares in 6 ways, for example, as 4678569 + 23853456 = 2163^2 + 4884^2 .

It is not a de Polignac number, because 28532025 - 2¹² = 28527929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28532025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 38559 + ... + 39291.

Almost surely, 2^28532025 is an apocalyptic number.

28532025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28532025 is a deficient number, since it is larger than the sum of its proper divisors (22937523).

28532025 is a wasteful number, since it uses less digits than its factorization.

28532025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 28532025 is about 5341.5376999512. The cubic root of 28532025 is about 305.5701063166.

The spelling of 28532025 in words is "twenty-eight million, five hundred thirty-two thousand, twenty-five".