28265325 has 24 divisors (see below), whose sum is σ = 50981856. Its totient is φ = 13704000.

The previous prime is 28265309. The next prime is 28265329. The reversal of 28265325 is 52356282.

It is not a de Polignac number, because 28265325 - 2⁴ = 28265309 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 not an unprimeable number, because it can be changed into a prime (28265329) 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, 16306 + ... + 17955.

It is an arithmetic number, because the mean of its divisors is an integer number (2124244).

Almost surely, 2^28265325 is an apocalyptic number.

28265325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28265325 is a deficient number, since it is larger than the sum of its proper divisors (22716531).

28265325 is a wasteful number, since it uses less digits than its factorization.

28265325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34285 (or 34280 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 28265325 is about 5316.5143656347. The cubic root of 28265325 is about 304.6150298386.

The spelling of 28265325 in words is "twenty-eight million, two hundred sixty-five thousand, three hundred twenty-five".