725392589 has 2 divisors, whose sum is σ = 725392590. Its totient is φ = 725392588.

The previous prime is 725392579. The next prime is 725392673. The reversal of 725392589 is 985293527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522899689 + 202492900 = 22867^2 + 14230^2 .

It is a cyclic number.

It is not a de Polignac number, because 725392589 - 2⁸ = 725392333 is a prime.

It is a super-2 number, since 2×725392589² = 1052388816352245842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725392519) 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, 362696294 + 362696295.

It is an arithmetic number, because the mean of its divisors is an integer number (362696295).

Almost surely, 2^725392589 is an apocalyptic number.

It is an amenable number.

725392589 is a deficient number, since it is larger than the sum of its proper divisors (1).

725392589 is an equidigital number, since it uses as much as digits as its factorization.

725392589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 50.

The square root of 725392589 is about 26933.1132437377. The cubic root of 725392589 is about 898.5130132667.

The spelling of 725392589 in words is "seven hundred twenty-five million, three hundred ninety-two thousand, five hundred eighty-nine".