725299217 has 8 divisors (see below), whose sum is σ = 763768800. Its totient is φ = 686859264.

The previous prime is 725299199. The next prime is 725299231. The reversal of 725299217 is 712992527.

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 725299217 - 2¹⁰ = 725298193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725299247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57518 + ... + 68984.

It is an arithmetic number, because the mean of its divisors is an integer number (95471100).

Almost surely, 2^725299217 is an apocalyptic number.

It is an amenable number.

725299217 is a deficient number, since it is larger than the sum of its proper divisors (38469583).

725299217 is a wasteful number, since it uses less digits than its factorization.

725299217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14815.

The product of its digits is 158760, while the sum is 44.

The square root of 725299217 is about 26931.3797826996. The cubic root of 725299217 is about 898.4744596346.

The spelling of 725299217 in words is "seven hundred twenty-five million, two hundred ninety-nine thousand, two hundred seventeen".