87425647289 has 2 divisors, whose sum is σ = 87425647290. Its totient is φ = 87425647288.

The previous prime is 87425647279. The next prime is 87425647333. The reversal of 87425647289 is 98274652478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87281839225 + 143808064 = 295435^2 + 11992^2 .

It is a cyclic number.

It is not a de Polignac number, because 87425647289 - 2⁴ = 87425647273 is a prime.

It is not a weakly prime, because it can be changed into another prime (87425647259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43712823644 + 43712823645.

It is an arithmetic number, because the mean of its divisors is an integer number (43712823645).

Almost surely, 2^87425647289 is an apocalyptic number.

It is an amenable number.

87425647289 is a deficient number, since it is larger than the sum of its proper divisors (1).

87425647289 is an equidigital number, since it uses as much as digits as its factorization.

87425647289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54190080, while the sum is 62.

The spelling of 87425647289 in words is "eighty-seven billion, four hundred twenty-five million, six hundred forty-seven thousand, two hundred eighty-nine".