725765231 has 8 divisors (see below), whose sum is σ = 744172800. Its totient is φ = 707391360.

The previous prime is 725765221. The next prime is 725765237. The reversal of 725765231 is 132567527.

725765231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 725765231 - 2¹⁴ = 725748847 is a prime.

It is a super-2 number, since 2×725765231² = 1053470341056966722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725765237) 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, 38450 + ... + 54128.

It is an arithmetic number, because the mean of its divisors is an integer number (93021600).

Almost surely, 2^725765231 is an apocalyptic number.

725765231 is a deficient number, since it is larger than the sum of its proper divisors (18407569).

725765231 is a wasteful number, since it uses less digits than its factorization.

725765231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16849.

The product of its digits is 88200, while the sum is 38.

The square root of 725765231 is about 26940.0302709555. The cubic root of 725765231 is about 898.6668455379. Note that the first 3 decimals are identical.

The spelling of 725765231 in words is "seven hundred twenty-five million, seven hundred sixty-five thousand, two hundred thirty-one".