725169 has 16 divisors (see below), whose sum is σ = 1045440. Its totient is φ = 445440.

The previous prime is 725161. The next prime is 725189. The reversal of 725169 is 961527.

It is not a de Polignac number, because 725169 - 2³ = 725161 is a prime.

It is a super-2 number, since 2×725169² = 1051740157122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (725161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2889 + ... + 3129.

It is an arithmetic number, because the mean of its divisors is an integer number (65340).

2⁷²⁵¹⁶⁹ is an apocalyptic number.

It is an amenable number.

725169 is a deficient number, since it is larger than the sum of its proper divisors (320271).

725169 is a wasteful number, since it uses less digits than its factorization.

725169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320.

The product of its digits is 3780, while the sum is 30.

The square root of 725169 is about 851.5685527308. The cubic root of 725169 is about 89.8420687045.

The spelling of 725169 in words is "seven hundred twenty-five thousand, one hundred sixty-nine".