28567025 has 12 divisors (see below), whose sum is σ = 35665500. Its totient is φ = 22697280.

The previous prime is 28566983. The next prime is 28567031. The reversal of 28567025 is 52076582.

It can be written as a sum of positive squares in 6 ways, for example, as 190096 + 28376929 = 436^2 + 5327^2 .

It is not a de Polignac number, because 28567025 - 2⁶ = 28566961 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110 + ... + 7559.

It is an arithmetic number, because the mean of its divisors is an integer number (2972125).

Almost surely, 2^28567025 is an apocalyptic number.

28567025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28567025 is a deficient number, since it is larger than the sum of its proper divisors (7098475).

28567025 is a wasteful number, since it uses less digits than its factorization.

28567025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7828 (or 7823 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 28567025 is about 5344.8129059865. The cubic root of 28567025 is about 305.6950020383.

The spelling of 28567025 in words is "twenty-eight million, five hundred sixty-seven thousand, twenty-five".