725556446 has 8 divisors (see below), whose sum is σ = 1089458424. Its totient is φ = 362403640.

The previous prime is 725556409. The next prime is 725556449. The reversal of 725556446 is 644655527.

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

It is a junction number, because it is equal to n+sod(n) for n = 725556397 and 725556406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725556449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184865 + ... + 188748.

It is an arithmetic number, because the mean of its divisors is an integer number (136182303).

Almost surely, 2^725556446 is an apocalyptic number.

725556446 is a deficient number, since it is larger than the sum of its proper divisors (363901978).

725556446 is a wasteful number, since it uses less digits than its factorization.

725556446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374586.

The product of its digits is 1008000, while the sum is 44.

The square root of 725556446 is about 26936.1549965841. The cubic root of 725556446 is about 898.5806624105.

The spelling of 725556446 in words is "seven hundred twenty-five million, five hundred fifty-six thousand, four hundred forty-six".