725562663173 has 2 divisors, whose sum is σ = 725562663174. Its totient is φ = 725562663172.

The previous prime is 725562663149. The next prime is 725562663193. The reversal of 725562663173 is 371366265527.

725562663173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556541364289 + 169021298884 = 746017^2 + 411122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725562663173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725562663113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362781331586 + 362781331587.

It is an arithmetic number, because the mean of its divisors is an integer number (362781331587).

Almost surely, 2^725562663173 is an apocalyptic number.

It is an amenable number.

725562663173 is a deficient number, since it is larger than the sum of its proper divisors (1).

725562663173 is an equidigital number, since it uses as much as digits as its factorization.

725562663173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9525600, while the sum is 53.

The spelling of 725562663173 in words is "seven hundred twenty-five billion, five hundred sixty-two million, six hundred sixty-three thousand, one hundred seventy-three".