725117 has 4 divisors (see below), whose sum is σ = 726876. Its totient is φ = 723360.

The previous prime is 725113. The next prime is 725119. The reversal of 725117 is 711527.

It is a happy number.

725117 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: 711527 = 677 ⋅1051.

It can be written as a sum of positive squares in 2 ways, for example, as 395641 + 329476 = 629^2 + 574^2 .

It is a cyclic number.

It is not a de Polignac number, because 725117 - 2² = 725113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725092 and 725101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725111) 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, 113 + ... + 1209.

It is an arithmetic number, because the mean of its divisors is an integer number (181719).

2⁷²⁵¹¹⁷ is an apocalyptic number.

It is an amenable number.

725117 is a deficient number, since it is larger than the sum of its proper divisors (1759).

725117 is a wasteful number, since it uses less digits than its factorization.

725117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758.

The product of its digits is 490, while the sum is 23.

The square root of 725117 is about 851.5380202903. The cubic root of 725117 is about 89.8399212055.

The spelling of 725117 in words is "seven hundred twenty-five thousand, one hundred seventeen".