725873 has 4 divisors (see below), whose sum is σ = 729828. Its totient is φ = 721920.

The previous prime is 725867. The next prime is 725891. The reversal of 725873 is 378527.

725873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 378527 = 157 ⋅2411.

It can be written as a sum of positive squares in 2 ways, for example, as 247009 + 478864 = 497^2 + 692^2 .

It is a cyclic number.

It is not a de Polignac number, because 725873 - 2¹⁶ = 660337 is a prime.

It is a super-2 number, since 2×725873² = 1053783224258, which contains 22 as substring.

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 725873.

It is not an unprimeable number, because it can be changed into a prime (725863) 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, 1688 + ... + 2073.

It is an arithmetic number, because the mean of its divisors is an integer number (182457).

2⁷²⁵⁸⁷³ is an apocalyptic number.

It is an amenable number.

725873 is a deficient number, since it is larger than the sum of its proper divisors (3955).

725873 is a wasteful number, since it uses less digits than its factorization.

725873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954.

The product of its digits is 11760, while the sum is 32.

The square root of 725873 is about 851.9818073175. The cubic root of 725873 is about 89.8711324400.

The spelling of 725873 in words is "seven hundred twenty-five thousand, eight hundred seventy-three".