28025297 has 2 divisors, whose sum is σ = 28025298. Its totient is φ = 28025296.

The previous prime is 28025273. The next prime is 28025303. The reversal of 28025297 is 79252082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26790976 + 1234321 = 5176^2 + 1111^2 .

It is a cyclic number.

It is not a de Polignac number, because 28025297 - 2¹⁰ = 28024273 is a prime.

It is not a weakly prime, because it can be changed into another prime (28025237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14012648 + 14012649.

It is an arithmetic number, because the mean of its divisors is an integer number (14012649).

Almost surely, 2^28025297 is an apocalyptic number.

It is an amenable number.

28025297 is a deficient number, since it is larger than the sum of its proper divisors (1).

28025297 is an equidigital number, since it uses as much as digits as its factorization.

28025297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 28025297 is about 5293.8924242942. The cubic root of 28025297 is about 303.7503179842.

The spelling of 28025297 in words is "twenty-eight million, twenty-five thousand, two hundred ninety-seven".