725556743 has 4 divisors (see below), whose sum is σ = 763743960. Its totient is φ = 687369528.

The previous prime is 725556707. The next prime is 725556761. The reversal of 725556743 is 347655527.

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

It is a cyclic number.

It is not a de Polignac number, because 725556743 - 2²⁰ = 724508167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725556694 and 725556703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725556703) 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, 19093580 + ... + 19093617.

It is an arithmetic number, because the mean of its divisors is an integer number (190935990).

Almost surely, 2^725556743 is an apocalyptic number.

725556743 is a deficient number, since it is larger than the sum of its proper divisors (38187217).

725556743 is a wasteful number, since it uses less digits than its factorization.

725556743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38187216.

The product of its digits is 882000, while the sum is 44.

The square root of 725556743 is about 26936.1605096198. The cubic root of 725556743 is about 898.5807850191.

The spelling of 725556743 in words is "seven hundred twenty-five million, five hundred fifty-six thousand, seven hundred forty-three".