725168663 has 2 divisors, whose sum is σ = 725168664. Its totient is φ = 725168662.

The previous prime is 725168627. The next prime is 725168669. The reversal of 725168663 is 366861527.

725168663 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 is a cyclic number.

It is not a de Polignac number, because 725168663 - 2¹⁸ = 724906519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725168669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362584331 + 362584332.

It is an arithmetic number, because the mean of its divisors is an integer number (362584332).

Almost surely, 2^725168663 is an apocalyptic number.

725168663 is a deficient number, since it is larger than the sum of its proper divisors (1).

725168663 is an equidigital number, since it uses as much as digits as its factorization.

725168663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 725168663 is about 26928.9558468204. The cubic root of 725168663 is about 898.4205478740.

The spelling of 725168663 in words is "seven hundred twenty-five million, one hundred sixty-eight thousand, six hundred sixty-three".