720325 has 6 divisors (see below), whose sum is σ = 893234. Its totient is φ = 576240.

The previous prime is 720319. The next prime is 720359. The reversal of 720325 is 523027.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2916 + 717409 = 54^2 + 847^2 .

It is not a de Polignac number, because 720325 - 2⁷ = 720197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14382 + ... + 14431.

2⁷²⁰³²⁵ is an apocalyptic number.

It is an amenable number.

720325 is a deficient number, since it is larger than the sum of its proper divisors (172909).

720325 is a wasteful number, since it uses less digits than its factorization.

720325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28823 (or 28818 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 720325 is about 848.7196239041. The cubic root of 720325 is about 89.6415786113.

The spelling of 720325 in words is "seven hundred twenty thousand, three hundred twenty-five".