725043511 has 8 divisors (see below), whose sum is σ = 742913424. Its totient is φ = 707219520.

The previous prime is 725043503. The next prime is 725043521. The reversal of 725043511 is 115340527.

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 725043511 - 2³ = 725043503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 725043511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725043521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21645 + ... + 43801.

It is an arithmetic number, because the mean of its divisors is an integer number (92864178).

Almost surely, 2^725043511 is an apocalyptic number.

725043511 is a deficient number, since it is larger than the sum of its proper divisors (17869913).

725043511 is a wasteful number, since it uses less digits than its factorization.

725043511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22961.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 725043511 is about 26926.6320025361. The cubic root of 725043511 is about 898.3688607732.

The spelling of 725043511 in words is "seven hundred twenty-five million, forty-three thousand, five hundred eleven".