85025489 has 2 divisors, whose sum is σ = 85025490. Its totient is φ = 85025488.

The previous prime is 85025471. The next prime is 85025531. The reversal of 85025489 is 98452058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74995600 + 10029889 = 8660^2 + 3167^2 .

It is a cyclic number.

It is not a de Polignac number, because 85025489 - 2²⁴ = 68248273 is a prime.

It is not a weakly prime, because it can be changed into another prime (85045489) 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, 42512744 + 42512745.

It is an arithmetic number, because the mean of its divisors is an integer number (42512745).

Almost surely, 2^85025489 is an apocalyptic number.

It is an amenable number.

85025489 is a deficient number, since it is larger than the sum of its proper divisors (1).

85025489 is an equidigital number, since it uses as much as digits as its factorization.

85025489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 85025489 is about 9220.9266887878. The cubic root of 85025489 is about 439.7269121535.

The spelling of 85025489 in words is "eighty-five million, twenty-five thousand, four hundred eighty-nine".