725752673 has 4 divisors (see below), whose sum is σ = 725935620. Its totient is φ = 725569728.

The previous prime is 725752663. The next prime is 725752679. The reversal of 725752673 is 376257527.

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 143592289 + 582160384 = 11983^2 + 24128^2 .

It is a cyclic number.

It is not a de Polignac number, because 725752673 - 2²⁴ = 708975457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (725752679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85388 + ... + 93501.

It is an arithmetic number, because the mean of its divisors is an integer number (181483905).

Almost surely, 2^725752673 is an apocalyptic number.

It is an amenable number.

725752673 is a deficient number, since it is larger than the sum of its proper divisors (182947).

725752673 is a wasteful number, since it uses less digits than its factorization.

725752673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182946.

The product of its digits is 617400, while the sum is 44.

The square root of 725752673 is about 26939.7971967125. The cubic root of 725752673 is about 898.6616622625.

The spelling of 725752673 in words is "seven hundred twenty-five million, seven hundred fifty-two thousand, six hundred seventy-three".