725699 has 4 divisors (see below), whose sum is σ = 781536. Its totient is φ = 669864.

The previous prime is 725687. The next prime is 725723. The reversal of 725699 is 996527.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-725699 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725699.

It is not an unprimeable number, because it can be changed into a prime (725639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27899 + ... + 27924.

It is an arithmetic number, because the mean of its divisors is an integer number (195384).

2⁷²⁵⁶⁹⁹ is an apocalyptic number.

725699 is a deficient number, since it is larger than the sum of its proper divisors (55837).

725699 is a wasteful number, since it uses less digits than its factorization.

725699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55836.

The product of its digits is 34020, while the sum is 38.

The square root of 725699 is about 851.8796863407. The cubic root of 725699 is about 89.8639508225.

The spelling of 725699 in words is "seven hundred twenty-five thousand, six hundred ninety-nine".