725939 has 2 divisors, whose sum is σ = 725940. Its totient is φ = 725938.

The previous prime is 725929. The next prime is 725953. The reversal of 725939 is 939527.

725939 is nontrivially palindromic in base 15.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 725939 - 2¹² = 721843 is a prime.

It is a super-3 number, since 3×725939³ = 1147682187588333057, which contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 725899 and 725908.

It is not a weakly prime, because it can be changed into another prime (725909) 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, 362969 + 362970.

It is an arithmetic number, because the mean of its divisors is an integer number (362970).

2⁷²⁵⁹³⁹ is an apocalyptic number.

725939 is a deficient number, since it is larger than the sum of its proper divisors (1).

725939 is an equidigital number, since it uses as much as digits as its factorization.

725939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 35.

The square root of 725939 is about 852.0205396585. The cubic root of 725939 is about 89.8738562015.

Subtracting from 725939 its sum of digits (35), we obtain a square (725904 = 852²).

The spelling of 725939 in words is "seven hundred twenty-five thousand, nine hundred thirty-nine".