725313 has 4 divisors (see below), whose sum is σ = 967088. Its totient is φ = 483540.

The previous prime is 725303. The next prime is 725317. The reversal of 725313 is 313527.

It is a happy number.

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 not a de Polignac number, because 725313 - 2⁸ = 725057 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 725313.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725313.

It is not an unprimeable number, because it can be changed into a prime (725317) 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, 120883 + ... + 120888.

It is an arithmetic number, because the mean of its divisors is an integer number (241772).

2⁷²⁵³¹³ is an apocalyptic number.

It is an amenable number.

725313 is a deficient number, since it is larger than the sum of its proper divisors (241775).

725313 is a wasteful number, since it uses less digits than its factorization.

725313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241774.

The product of its digits is 630, while the sum is 21.

The square root of 725313 is about 851.6530983916. The cubic root of 725313 is about 89.8480150893.

The spelling of 725313 in words is "seven hundred twenty-five thousand, three hundred thirteen".