725807 has 2 divisors, whose sum is σ = 725808. Its totient is φ = 725806.

The previous prime is 725801. The next prime is 725827. The reversal of 725807 is 708527.

It is a weak prime.

It is an emirp because it is prime and its reverse (708527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725807 - 2¹⁰ = 724783 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 725807.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725807.

It is not a weakly prime, because it can be changed into another prime (725801) 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, 362903 + 362904.

It is an arithmetic number, because the mean of its divisors is an integer number (362904).

2⁷²⁵⁸⁰⁷ is an apocalyptic number.

725807 is a deficient number, since it is larger than the sum of its proper divisors (1).

725807 is an equidigital number, since it uses as much as digits as its factorization.

725807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 725807 is about 851.9430732156. The cubic root of 725807 is about 89.8684085133.

The spelling of 725807 in words is "seven hundred twenty-five thousand, eight hundred seven".