725535 has 24 divisors (see below), whose sum is σ = 1314144. Its totient is φ = 369600.

The previous prime is 725531. The next prime is 725537. The reversal of 725535 is 535527.

725535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 725535 - 2² = 725531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 725499 and 725508.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725535.

It is not an unprimeable number, because it can be changed into a prime (725531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 685 + ... + 1385.

It is an arithmetic number, because the mean of its divisors is an integer number (54756).

2⁷²⁵⁵³⁵ is an apocalyptic number.

725535 is a deficient number, since it is larger than the sum of its proper divisors (588609).

725535 is a wasteful number, since it uses less digits than its factorization.

725535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 732 counting only the distinct ones).

The product of its digits is 5250, while the sum is 27.

The square root of 725535 is about 851.7834231775. The cubic root of 725535 is about 89.8571808906.

The spelling of 725535 in words is "seven hundred twenty-five thousand, five hundred thirty-five".