725550566 has 32 divisors (see below), whose sum is σ = 1184168160. Its totient is φ = 331428096.

The previous prime is 725550563. The next prime is 725550593. The reversal of 725550566 is 665055527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725550563) 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 15 ways as a sum of consecutive naturals, for example, 1587410 + ... + 1587866.

It is an arithmetic number, because the mean of its divisors is an integer number (37005255).

Almost surely, 2^725550566 is an apocalyptic number.

725550566 is a deficient number, since it is larger than the sum of its proper divisors (458617594).

725550566 is a wasteful number, since it uses less digits than its factorization.

725550566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its (nonzero) digits is 315000, while the sum is 41.

The square root of 725550566 is about 26936.0458493818. The cubic root of 725550566 is about 898.5782350006.

The spelling of 725550566 in words is "seven hundred twenty-five million, five hundred fifty thousand, five hundred sixty-six".