28574325 has 36 divisors (see below), whose sum is σ = 55122340. Its totient is φ = 14065920.

The previous prime is 28574321. The next prime is 28574333. The reversal of 28574325 is 52347582.

It can be written as a sum of positive squares in 6 ways, for example, as 4691556 + 23882769 = 2166^2 + 4887^2 .

It is not a de Polignac number, because 28574325 - 2² = 28574321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28574325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28574321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1960 + ... + 7809.

Almost surely, 2^28574325 is an apocalyptic number.

28574325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28574325 is a deficient number, since it is larger than the sum of its proper divisors (26548015).

28574325 is a wasteful number, since it uses less digits than its factorization.

28574325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9798 (or 9790 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 28574325 is about 5345.4957674663. The cubic root of 28574325 is about 305.7210388582.

The spelling of 28574325 in words is "twenty-eight million, five hundred seventy-four thousand, three hundred twenty-five".