28352525 has 24 divisors (see below), whose sum is σ = 36456000. Its totient is φ = 21859200.

The previous prime is 28352521. The next prime is 28352557. The reversal of 28352525 is 52525382.

It is not a de Polignac number, because 28352525 - 2² = 28352521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28352491 and 28352500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28352521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142376 + ... + 142574.

It is an arithmetic number, because the mean of its divisors is an integer number (1519000).

Almost surely, 2^28352525 is an apocalyptic number.

28352525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28352525 is a deficient number, since it is larger than the sum of its proper divisors (8103475).

28352525 is a wasteful number, since it uses less digits than its factorization.

28352525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 384 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The square root of 28352525 is about 5324.7089122317. The cubic root of 28352525 is about 304.9279593359.

The spelling of 28352525 in words is "twenty-eight million, three hundred fifty-two thousand, five hundred twenty-five".