725079730 has 16 divisors (see below), whose sum is σ = 1306251864. Its totient is φ = 289785600.

The previous prime is 725079709. The next prime is 725079731. The reversal of 725079730 is 37970527.

It can be written as a sum of positive squares in 4 ways, for example, as 376398801 + 348680929 = 19401^2 + 18673^2 .

It is a super-2 number, since 2×725079730² = 1051481229713745800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (725079731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18177 + ... + 42196.

Almost surely, 2^725079730 is an apocalyptic number.

725079730 is a deficient number, since it is larger than the sum of its proper divisors (581172134).

725079730 is a wasteful number, since it uses less digits than its factorization.

725079730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61581.

The product of its (nonzero) digits is 92610, while the sum is 40.

The square root of 725079730 is about 26927.3045439012. The cubic root of 725079730 is about 898.3838196363.

The spelling of 725079730 in words is "seven hundred twenty-five million, seventy-nine thousand, seven hundred thirty".