75725557723 has 2 divisors, whose sum is σ = 75725557724. Its totient is φ = 75725557722.

The previous prime is 75725557717. The next prime is 75725557771. The reversal of 75725557723 is 32775552757.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (32775552757) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75725557723 is a prime.

It is not a weakly prime, because it can be changed into another prime (75725557793) 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, 37862778861 + 37862778862.

It is an arithmetic number, because the mean of its divisors is an integer number (37862778862).

Almost surely, 2^75725557723 is an apocalyptic number.

75725557723 is a deficient number, since it is larger than the sum of its proper divisors (1).

75725557723 is an equidigital number, since it uses as much as digits as its factorization.

75725557723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18007500, while the sum is 55.

The spelling of 75725557723 in words is "seventy-five billion, seven hundred twenty-five million, five hundred fifty-seven thousand, seven hundred twenty-three".