725566571 has 2 divisors, whose sum is σ = 725566572. Its totient is φ = 725566570.

The previous prime is 725566549. The next prime is 725566619. The reversal of 725566571 is 175665527.

It is a weak prime.

It is an emirp because it is prime and its reverse (175665527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725566571 - 2⁶ = 725566507 is a prime.

It is not a weakly prime, because it can be changed into another prime (725566531) 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 as a sum of consecutive naturals, namely, 362783285 + 362783286.

It is an arithmetic number, because the mean of its divisors is an integer number (362783286).

Almost surely, 2^725566571 is an apocalyptic number.

725566571 is a deficient number, since it is larger than the sum of its proper divisors (1).

725566571 is an equidigital number, since it uses as much as digits as its factorization.

725566571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 441000, while the sum is 44.

The square root of 725566571 is about 26936.3429403473. The cubic root of 725566571 is about 898.5848422309.

The spelling of 725566571 in words is "seven hundred twenty-five million, five hundred sixty-six thousand, five hundred seventy-one".