725224165 has 16 divisors (see below), whose sum is σ = 937085760. Its totient is φ = 536792320.

The previous prime is 725224163. The next prime is 725224183. The reversal of 725224165 is 561422527.

725224165 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 725224165 - 2¹ = 725224163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 725224165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725224163) 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, 67291 + ... + 77320.

It is an arithmetic number, because the mean of its divisors is an integer number (58567860).

Almost surely, 2^725224165 is an apocalyptic number.

It is an amenable number.

725224165 is a deficient number, since it is larger than the sum of its proper divisors (211861595).

725224165 is a wasteful number, since it uses less digits than its factorization.

725224165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144692.

The product of its digits is 33600, while the sum is 34.

The square root of 725224165 is about 26929.9863535056. The cubic root of 725224165 is about 898.4434679972.

The spelling of 725224165 in words is "seven hundred twenty-five million, two hundred twenty-four thousand, one hundred sixty-five".