725005 has 8 divisors (see below), whose sum is σ = 880992. Its totient is φ = 572688.

The previous prime is 724993. The next prime is 725009. The reversal of 725005 is 500527.

725005 = 37³ + 38³ + ... + 46³.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 725005 - 2¹⁷ = 593933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459 + ... + 1288.

It is an arithmetic number, because the mean of its divisors is an integer number (110124).

2⁷²⁵⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

725005 is a deficient number, since it is larger than the sum of its proper divisors (155987).

725005 is a wasteful number, since it uses less digits than its factorization.

725005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835.

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 725005 is about 851.4722543924. The cubic root of 725005 is about 89.8352954741.

The spelling of 725005 in words is "seven hundred twenty-five thousand, five".