87086225 has 6 divisors (see below), whose sum is σ = 107986950. Its totient is φ = 69668960.

The previous prime is 87086221. The next prime is 87086231. The reversal of 87086225 is 52268078.

It is a Cunningham number, because it is equal to 9332²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1 + 87086224 = 1^2 + 9332^2 .

It is not a de Polignac number, because 87086225 - 2² = 87086221 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87086221) 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 in 5 ways as a sum of consecutive naturals, for example, 1741700 + ... + 1741749.

It is an arithmetic number, because the mean of its divisors is an integer number (17997825).

Almost surely, 2^87086225 is an apocalyptic number.

It is an amenable number.

87086225 is a deficient number, since it is larger than the sum of its proper divisors (20900725).

87086225 is a wasteful number, since it uses less digits than its factorization.

87086225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3483459 (or 3483454 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 87086225 is about 9332.0000535791. Note that the first 4 decimals coincide. The cubic root of 87086225 is about 443.2510996902.

The spelling of 87086225 in words is "eighty-seven million, eighty-six thousand, two hundred twenty-five".