68525189 has 2 divisors, whose sum is σ = 68525190. Its totient is φ = 68525188.

The previous prime is 68525161. The next prime is 68525207. The reversal of 68525189 is 98152586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68194564 + 330625 = 8258^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 68525189 - 2¹² = 68521093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68525129) 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, 34262594 + 34262595.

It is an arithmetic number, because the mean of its divisors is an integer number (34262595).

Almost surely, 2^68525189 is an apocalyptic number.

It is an amenable number.

68525189 is a deficient number, since it is larger than the sum of its proper divisors (1).

68525189 is an equidigital number, since it uses as much as digits as its factorization.

68525189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 44.

The square root of 68525189 is about 8277.9942618970. The cubic root of 68525189 is about 409.2136205898.

The spelling of 68525189 in words is "sixty-eight million, five hundred twenty-five thousand, one hundred eighty-nine".