725529 has 8 divisors (see below), whose sum is σ = 1105600. Its totient is φ = 414576.

The previous prime is 725519. The next prime is 725531. The reversal of 725529 is 925527.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 725529 - 2⁸ = 725273 is a prime.

It is a Duffinian number.

It is a Curzon number.

725529 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 725496 and 725505.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725529.

It is not an unprimeable number, because it can be changed into a prime (725519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17254 + ... + 17295.

It is an arithmetic number, because the mean of its divisors is an integer number (138200).

2⁷²⁵⁵²⁹ is an apocalyptic number.

It is an amenable number.

725529 is a deficient number, since it is larger than the sum of its proper divisors (380071).

725529 is a wasteful number, since it uses less digits than its factorization.

725529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34559.

The product of its digits is 6300, while the sum is 30.

The square root of 725529 is about 851.7799011482. The cubic root of 725529 is about 89.8569331909.

The spelling of 725529 in words is "seven hundred twenty-five thousand, five hundred twenty-nine".