725671716713 has 4 divisors (see below), whose sum is σ = 727617217668. Its totient is φ = 723726215760.

The previous prime is 725671716697. The next prime is 725671716751. The reversal of 725671716713 is 317617176527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 317617176527 = 7 ⋅45373882361.

It can be written as a sum of positive squares in 2 ways, for example, as 438367140649 + 287304576064 = 662093^2 + 536008^2 .

It is a cyclic number.

It is not a de Polignac number, because 725671716713 - 2⁴ = 725671716697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725671716793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972749918 + ... + 972750663.

It is an arithmetic number, because the mean of its divisors is an integer number (181904304417).

Almost surely, 2^725671716713 is an apocalyptic number.

It is an amenable number.

725671716713 is a deficient number, since it is larger than the sum of its proper divisors (1945500955).

725671716713 is a wasteful number, since it uses less digits than its factorization.

725671716713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945500954.

The product of its digits is 2593080, while the sum is 53.

The spelling of 725671716713 in words is "seven hundred twenty-five billion, six hundred seventy-one million, seven hundred sixteen thousand, seven hundred thirteen".