725443930 has 8 divisors (see below), whose sum is σ = 1305799092. Its totient is φ = 290177568.

The previous prime is 725443909. The next prime is 725443933. The reversal of 725443930 is 39344527.

It can be written as a sum of positive squares in 2 ways, for example, as 719258761 + 6185169 = 26819^2 + 2487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 725443930.

It is not an unprimeable number, because it can be changed into a prime (725443933) 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, 36272187 + ... + 36272206.

Almost surely, 2^725443930 is an apocalyptic number.

725443930 is a deficient number, since it is larger than the sum of its proper divisors (580355162).

725443930 is a wasteful number, since it uses less digits than its factorization.

725443930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72544400.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 725443930 is about 26934.0663472859. The cubic root of 725443930 is about 898.5342107392.

The spelling of 725443930 in words is "seven hundred twenty-five million, four hundred forty-three thousand, nine hundred thirty".