725754728 has 16 divisors (see below), whose sum is σ = 1361104260. Its totient is φ = 362793600.

The previous prime is 725754721. The next prime is 725754763. The reversal of 725754728 is 827457527.

It can be written as a sum of positive squares in 2 ways, for example, as 681105604 + 44649124 = 26098^2 + 6682^2 .

It is not an unprimeable number, because it can be changed into a prime (725754721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41558 + ... + 56378.

Almost surely, 2^725754728 is an apocalyptic number.

It is an amenable number.

725754728 is a deficient number, since it is larger than the sum of its proper divisors (635349532).

725754728 is a wasteful number, since it uses less digits than its factorization.

725754728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20948 (or 20944 counting only the distinct ones).

The product of its digits is 1097600, while the sum is 47.

The square root of 725754728 is about 26939.8353372845. The cubic root of 725754728 is about 898.6625104614.

The spelling of 725754728 in words is "seven hundred twenty-five million, seven hundred fifty-four thousand, seven hundred twenty-eight".