725556422 has 4 divisors (see below), whose sum is σ = 1088334636. Its totient is φ = 362778210.

The previous prime is 725556409. The next prime is 725556449. The reversal of 725556422 is 224655527.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 181389104 + ... + 181389107.

It is an arithmetic number, because the mean of its divisors is an integer number (272083659).

Almost surely, 2^725556422 is an apocalyptic number.

725556422 is a deficient number, since it is larger than the sum of its proper divisors (362778214).

725556422 is a wasteful number, since it uses less digits than its factorization.

725556422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362778213.

The product of its digits is 168000, while the sum is 38.

The square root of 725556422 is about 26936.1545510862. The cubic root of 725556422 is about 898.5806525027.

The spelling of 725556422 in words is "seven hundred twenty-five million, five hundred fifty-six thousand, four hundred twenty-two".