725869 has 4 divisors (see below), whose sum is σ = 727744. Its totient is φ = 723996.

The previous prime is 725867. The next prime is 725891. The reversal of 725869 is 968527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 725869 - 2¹ = 725867 is a prime.

It is a super-2 number, since 2×725869² = 1053771610322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725861) 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 in 3 ways as a sum of consecutive naturals, for example, 117 + ... + 1210.

It is an arithmetic number, because the mean of its divisors is an integer number (181936).

2⁷²⁵⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

725869 is a deficient number, since it is larger than the sum of its proper divisors (1875).

725869 is a wasteful number, since it uses less digits than its factorization.

725869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874.

The product of its digits is 30240, while the sum is 37.

The square root of 725869 is about 851.9794598463. The cubic root of 725869 is about 89.8709673582.

The spelling of 725869 in words is "seven hundred twenty-five thousand, eight hundred sixty-nine".