76725920305 has 4 divisors (see below), whose sum is σ = 92071104372. Its totient is φ = 61380736240.

The previous prime is 76725920303. The next prime is 76725920311. The reversal of 76725920305 is 50302952767.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9360756001 + 67365164304 = 96751^2 + 259548^2 .

It is not a de Polignac number, because 76725920305 - 2¹ = 76725920303 is a prime.

It is a super-2 number, since 2×76725920305² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76725920303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7672592026 + ... + 7672592035.

It is an arithmetic number, because the mean of its divisors is an integer number (23017776093).

Almost surely, 2^76725920305 is an apocalyptic number.

It is an amenable number.

76725920305 is a deficient number, since it is larger than the sum of its proper divisors (15345184067).

76725920305 is a wasteful number, since it uses less digits than its factorization.

76725920305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15345184066.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 76725920305 in words is "seventy-six billion, seven hundred twenty-five million, nine hundred twenty thousand, three hundred five".