87525089 has 2 divisors, whose sum is σ = 87525090. Its totient is φ = 87525088.

The previous prime is 87525083. The next prime is 87525131. The reversal of 87525089 is 98052578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61105489 + 26419600 = 7817^2 + 5140^2 .

It is a cyclic number.

It is not a de Polignac number, because 87525089 - 2²⁰ = 86476513 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (87525083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43762544 + 43762545.

It is an arithmetic number, because the mean of its divisors is an integer number (43762545).

Almost surely, 2^87525089 is an apocalyptic number.

It is an amenable number.

87525089 is a deficient number, since it is larger than the sum of its proper divisors (1).

87525089 is an equidigital number, since it uses as much as digits as its factorization.

87525089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 87525089 is about 9355.4844342770. The cubic root of 87525089 is about 443.9944284803.

The spelling of 87525089 in words is "eighty-seven million, five hundred twenty-five thousand, eighty-nine".