28525499 has 2 divisors, whose sum is σ = 28525500. Its totient is φ = 28525498.

The previous prime is 28525493. The next prime is 28525513. The reversal of 28525499 is 99452582.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28525499 is a prime.

It is not a weakly prime, because it can be changed into another prime (28525493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14262749 + 14262750.

It is an arithmetic number, because the mean of its divisors is an integer number (14262750).

Almost surely, 2^28525499 is an apocalyptic number.

28525499 is a deficient number, since it is larger than the sum of its proper divisors (1).

28525499 is an equidigital number, since it uses as much as digits as its factorization.

28525499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 44.

The square root of 28525499 is about 5340.9267922337. The cubic root of 28525499 is about 305.5468073210.

The spelling of 28525499 in words is "twenty-eight million, five hundred twenty-five thousand, four hundred ninety-nine".