28525579 has 2 divisors, whose sum is σ = 28525580. Its totient is φ = 28525578.

The previous prime is 28525559. The next prime is 28525621. The reversal of 28525579 is 97552582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28525579 - 2⁵ = 28525547 is a prime.

It is not a weakly prime, because it can be changed into another prime (28525529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14262789 + 14262790.

It is an arithmetic number, because the mean of its divisors is an integer number (14262790).

Almost surely, 2^28525579 is an apocalyptic number.

28525579 is a deficient number, since it is larger than the sum of its proper divisors (1).

28525579 is an equidigital number, since it uses as much as digits as its factorization.

28525579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 43.

The square root of 28525579 is about 5340.9342815654. The cubic root of 28525579 is about 305.5470929569.

The spelling of 28525579 in words is "twenty-eight million, five hundred twenty-five thousand, five hundred seventy-nine".