725660043 has 4 divisors (see below), whose sum is σ = 967546728. Its totient is φ = 483773360.

The previous prime is 725660041. The next prime is 725660081. The reversal of 725660043 is 340066527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 725660043 - 2¹ = 725660041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 725659986 and 725660013.

It is not an unprimeable number, because it can be changed into a prime (725660041) 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 3 ways as a sum of consecutive naturals, for example, 120943338 + ... + 120943343.

It is an arithmetic number, because the mean of its divisors is an integer number (241886682).

Almost surely, 2^725660043 is an apocalyptic number.

725660043 is a deficient number, since it is larger than the sum of its proper divisors (241886685).

725660043 is a wasteful number, since it uses less digits than its factorization.

725660043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241886684.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 725660043 is about 26938.0779381158. The cubic root of 725660043 is about 898.6234276707.

The spelling of 725660043 in words is "seven hundred twenty-five million, six hundred sixty thousand, forty-three".