8525989 has 2 divisors, whose sum is σ = 8525990. Its totient is φ = 8525988.

The previous prime is 8525983. The next prime is 8526013. The reversal of 8525989 is 9895258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8352100 + 173889 = 2890^2 + 417^2 .

It is a cyclic number.

It is not a de Polignac number, because 8525989 - 2³ = 8525981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8525981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4262994 + 4262995.

It is an arithmetic number, because the mean of its divisors is an integer number (4262995).

Almost surely, 2^8525989 is an apocalyptic number.

It is an amenable number.

8525989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8525989 is an equidigital number, since it uses as much as digits as its factorization.

8525989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 46.

The square root of 8525989 is about 2919.9296224396. The cubic root of 8525989 is about 204.2905398123.

The spelling of 8525989 in words is "eight million, five hundred twenty-five thousand, nine hundred eighty-nine".