725838 has 16 divisors (see below), whose sum is σ = 1528320. Its totient is φ = 229176.

The previous prime is 725827. The next prime is 725861. The reversal of 725838 is 838527.

725838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 725799 and 725808.

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 725838.

It is an unprimeable number.

725838 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3070 + ... + 3297.

It is an arithmetic number, because the mean of its divisors is an integer number (95520).

2⁷²⁵⁸³⁸ is an apocalyptic number.

725838 is an abundant number, since it is smaller than the sum of its proper divisors (802482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725838 is a wasteful number, since it uses less digits than its factorization.

725838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6391.

The product of its digits is 13440, while the sum is 33.

The square root of 725838 is about 851.9612667252. The cubic root of 725838 is about 89.8696879539.

The spelling of 725838 in words is "seven hundred twenty-five thousand, eight hundred thirty-eight".