28525329 has 24 divisors (see below), whose sum is σ = 47566272. Its totient is φ = 16135200.

The previous prime is 28525319. The next prime is 28525331. The reversal of 28525329 is 92352582.

It is not a de Polignac number, because 28525329 - 2⁸ = 28525073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28525293 and 28525302.

It is not an unprimeable number, because it can be changed into a prime (28525309) 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 23 ways as a sum of consecutive naturals, for example, 4122 + ... + 8604.

It is an arithmetic number, because the mean of its divisors is an integer number (1981928).

Almost surely, 2^28525329 is an apocalyptic number.

It is an amenable number.

28525329 is a deficient number, since it is larger than the sum of its proper divisors (19040943).

28525329 is a wasteful number, since it uses less digits than its factorization.

28525329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4597 (or 4594 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 28525329 is about 5340.9108773691. The cubic root of 28525329 is about 305.5462003429.

The spelling of 28525329 in words is "twenty-eight million, five hundred twenty-five thousand, three hundred twenty-nine".