28525233 has 16 divisors (see below), whose sum is σ = 41582592. Its totient is φ = 17250000.

The previous prime is 28525229. The next prime is 28525253. The reversal of 28525233 is 33252582.

It is not a de Polignac number, because 28525233 - 2² = 28525229 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28525233.

It is not an unprimeable number, because it can be changed into a prime (28525223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24208 + ... + 25358.

It is an arithmetic number, because the mean of its divisors is an integer number (2598912).

Almost surely, 2^28525233 is an apocalyptic number.

It is an amenable number.

28525233 is a deficient number, since it is larger than the sum of its proper divisors (13057359).

28525233 is a wasteful number, since it uses less digits than its factorization.

28525233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916.

The product of its digits is 14400, while the sum is 30.

The square root of 28525233 is about 5340.9018901305. The cubic root of 28525233 is about 305.5458575777.

The spelling of 28525233 in words is "twenty-eight million, five hundred twenty-five thousand, two hundred thirty-three".