726525491 has 2 divisors, whose sum is σ = 726525492. Its totient is φ = 726525490.

The previous prime is 726525467. The next prime is 726525497. The reversal of 726525491 is 194525627.

It is a strong prime.

It is an emirp because it is prime and its reverse (194525627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 726525491 - 2⁶ = 726525427 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (726525497) 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, 363262745 + 363262746.

It is an arithmetic number, because the mean of its divisors is an integer number (363262746).

Almost surely, 2^726525491 is an apocalyptic number.

726525491 is a deficient number, since it is larger than the sum of its proper divisors (1).

726525491 is an equidigital number, since it uses as much as digits as its factorization.

726525491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 726525491 is about 26954.1368068057. The cubic root of 726525491 is about 898.9805291743.

The spelling of 726525491 in words is "seven hundred twenty-six million, five hundred twenty-five thousand, four hundred ninety-one".