28325249 has 2 divisors, whose sum is σ = 28325250. Its totient is φ = 28325248.

The previous prime is 28325243. The next prime is 28325279. The reversal of 28325249 is 94252382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25684624 + 2640625 = 5068^2 + 1625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28325249 is a prime.

It is not a weakly prime, because it can be changed into another prime (28325243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14162624 + 14162625.

It is an arithmetic number, because the mean of its divisors is an integer number (14162625).

Almost surely, 2^28325249 is an apocalyptic number.

It is an amenable number.

28325249 is a deficient number, since it is larger than the sum of its proper divisors (1).

28325249 is an equidigital number, since it uses as much as digits as its factorization.

28325249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 28325249 is about 5322.1470291603. The cubic root of 28325249 is about 304.8301446076.

The spelling of 28325249 in words is "twenty-eight million, three hundred twenty-five thousand, two hundred forty-nine".