28472325 has 48 divisors (see below), whose sum is σ = 54270336. Its totient is φ = 12902400.

The previous prime is 28472303. The next prime is 28472329. The reversal of 28472325 is 52327482.

It is not a de Polignac number, because 28472325 - 2⁵ = 28472293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28472329) 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 47 ways as a sum of consecutive naturals, for example, 101185 + ... + 101465.

It is an arithmetic number, because the mean of its divisors is an integer number (1130632).

Almost surely, 2^28472325 is an apocalyptic number.

28472325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28472325 is a deficient number, since it is larger than the sum of its proper divisors (25798011).

28472325 is a wasteful number, since it uses less digits than its factorization.

28472325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 489 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 28472325 is about 5335.9464952340. The cubic root of 28472325 is about 305.3568339950.

The spelling of 28472325 in words is "twenty-eight million, four hundred seventy-two thousand, three hundred twenty-five".