28260525 has 12 divisors (see below), whose sum is σ = 46724192. Its totient is φ = 15072240.

The previous prime is 28260517. The next prime is 28260527. The reversal of 28260525 is 52506282.

It is not a de Polignac number, because 28260525 - 2³ = 28260517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28260492 and 28260501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28260527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188329 + ... + 188478.

Almost surely, 2^28260525 is an apocalyptic number.

28260525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28260525 is a deficient number, since it is larger than the sum of its proper divisors (18463667).

28260525 is a wasteful number, since it uses less digits than its factorization.

28260525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376820 (or 376815 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 28260525 is about 5316.0629228782. The cubic root of 28260525 is about 304.5977856838.

The spelling of 28260525 in words is "twenty-eight million, two hundred sixty thousand, five hundred twenty-five".