725699813 has 8 divisors (see below), whose sum is σ = 764325120. Its totient is φ = 687117600.

The previous prime is 725699803. The next prime is 725699837. The reversal of 725699813 is 318996527.

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

It is a cyclic number.

It is not a de Polignac number, because 725699813 - 2¹⁰ = 725698789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725699803) 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, 27281 + ... + 46857.

It is an arithmetic number, because the mean of its divisors is an integer number (95540640).

Almost surely, 2^725699813 is an apocalyptic number.

It is an amenable number.

725699813 is a deficient number, since it is larger than the sum of its proper divisors (38625307).

725699813 is a wasteful number, since it uses less digits than its factorization.

725699813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21547.

The product of its digits is 816480, while the sum is 50.

The square root of 725699813 is about 26938.8161024199. The cubic root of 725699813 is about 898.6398438062.

The spelling of 725699813 in words is "seven hundred twenty-five million, six hundred ninety-nine thousand, eight hundred thirteen".