725505 has 16 divisors (see below), whose sum is σ = 1266624. Its totient is φ = 351680.

The previous prime is 725479. The next prime is 725507. The reversal of 725505 is 505527.

It is not a de Polignac number, because 725505 - 2⁹ = 724993 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725505.

It is not an unprimeable number, because it can be changed into a prime (725507) 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, 2034 + ... + 2363.

It is an arithmetic number, because the mean of its divisors is an integer number (79164).

2⁷²⁵⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

725505 is a deficient number, since it is larger than the sum of its proper divisors (541119).

725505 is a wasteful number, since it uses less digits than its factorization.

725505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416.

The product of its (nonzero) digits is 1750, while the sum is 24.

The square root of 725505 is about 851.7658128852. The cubic root of 725505 is about 89.8559423781.

The spelling of 725505 in words is "seven hundred twenty-five thousand, five hundred five".