725723 has 2 divisors, whose sum is σ = 725724. Its totient is φ = 725722.

The previous prime is 725687. The next prime is 725731. The reversal of 725723 is 327527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725723 - 2¹⁸ = 463579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 725692 and 725701.

It is not a weakly prime, because it can be changed into another prime (725323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362861 + 362862.

It is an arithmetic number, because the mean of its divisors is an integer number (362862).

2⁷²⁵⁷²³ is an apocalyptic number.

725723 is a deficient number, since it is larger than the sum of its proper divisors (1).

725723 is an equidigital number, since it uses as much as digits as its factorization.

725723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2940, while the sum is 26.

The square root of 725723 is about 851.8937727205. The cubic root of 725723 is about 89.8649414586.

The spelling of 725723 in words is "seven hundred twenty-five thousand, seven hundred twenty-three".