28246625 has 16 divisors (see below), whose sum is σ = 38458368. Its totient is φ = 20542000.

The previous prime is 28246619. The next prime is 28246627. The reversal of 28246625 is 52664282.

It is not a de Polignac number, because 28246625 - 2¹⁶ = 28181089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28246627) 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 15 ways as a sum of consecutive naturals, for example, 8897 + ... + 11646.

It is an arithmetic number, because the mean of its divisors is an integer number (2403648).

Almost surely, 2^28246625 is an apocalyptic number.

28246625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28246625 is a deficient number, since it is larger than the sum of its proper divisors (10211743).

28246625 is a wasteful number, since it uses less digits than its factorization.

28246625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20569 (or 20559 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 28246625 is about 5314.7554035910. The cubic root of 28246625 is about 304.5478384687.

It can be divided in two parts, 2824 and 6625, that added together give a palindrome (9449).

The spelling of 28246625 in words is "twenty-eight million, two hundred forty-six thousand, six hundred twenty-five".