75625019609 has 2 divisors, whose sum is σ = 75625019610. Its totient is φ = 75625019608.

The previous prime is 75625019579. The next prime is 75625019651. The reversal of 75625019609 is 90691052657.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62462505625 + 13162513984 = 249925^2 + 114728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75625019609 is a prime.

It is not a weakly prime, because it can be changed into another prime (75625019669) 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, 37812509804 + 37812509805.

It is an arithmetic number, because the mean of its divisors is an integer number (37812509805).

Almost surely, 2^75625019609 is an apocalyptic number.

It is an amenable number.

75625019609 is a deficient number, since it is larger than the sum of its proper divisors (1).

75625019609 is an equidigital number, since it uses as much as digits as its factorization.

75625019609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1020600, while the sum is 50.

The spelling of 75625019609 in words is "seventy-five billion, six hundred twenty-five million, nineteen thousand, six hundred nine".