725017 has 4 divisors (see below), whose sum is σ = 732160. Its totient is φ = 717876.

The previous prime is 725009. The next prime is 725041. The reversal of 725017 is 710527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 725017 - 2³ = 725009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3417 + ... + 3622.

It is an arithmetic number, because the mean of its divisors is an integer number (183040).

2⁷²⁵⁰¹⁷ is an apocalyptic number.

It is an amenable number.

725017 is a deficient number, since it is larger than the sum of its proper divisors (7143).

725017 is a wasteful number, since it uses less digits than its factorization.

725017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 725017 is about 851.4793009815. The cubic root of 725017 is about 89.8357911110.

The spelling of 725017 in words is "seven hundred twenty-five thousand, seventeen".