28285125 has 32 divisors (see below), whose sum is σ = 51352704. Its totient is φ = 13712000.

The previous prime is 28285109. The next prime is 28285171. The reversal of 28285125 is 52158282.

28285125 is nontrivially palindromic in base 12.

It is not a de Polignac number, because 28285125 - 2⁴ = 28285109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 697 + ... + 7553.

It is an arithmetic number, because the mean of its divisors is an integer number (1604772).

Almost surely, 2^28285125 is an apocalyptic number.

28285125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28285125 is a deficient number, since it is larger than the sum of its proper divisors (23067579).

28285125 is a wasteful number, since it uses less digits than its factorization.

28285125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6886 (or 6876 counting only the distinct ones).

The product of its digits is 12800, while the sum is 33.

The square root of 28285125 is about 5318.3761619502. The cubic root of 28285125 is about 304.6861413483.

The spelling of 28285125 in words is "twenty-eight million, two hundred eighty-five thousand, one hundred twenty-five".