725825231 has 4 divisors (see below), whose sum is σ = 726490392. Its totient is φ = 725160072.

The previous prime is 725825197. The next prime is 725825239. The reversal of 725825231 is 132528527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 725825231 - 2¹⁰ = 725824207 is a prime.

It is a super-2 number, since 2×725825231² = 1053644531912406722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725825191 and 725825200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725825239) 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, 330941 + ... + 333126.

It is an arithmetic number, because the mean of its divisors is an integer number (181622598).

Almost surely, 2^725825231 is an apocalyptic number.

725825231 is a deficient number, since it is larger than the sum of its proper divisors (665161).

725825231 is a wasteful number, since it uses less digits than its factorization.

725825231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665160.

The product of its digits is 33600, while the sum is 35.

The square root of 725825231 is about 26941.1438324359. The cubic root of 725825231 is about 898.6916095262.

The spelling of 725825231 in words is "seven hundred twenty-five million, eight hundred twenty-five thousand, two hundred thirty-one".