725440193 has 2 divisors, whose sum is σ = 725440194. Its totient is φ = 725440192.

The previous prime is 725440153. The next prime is 725440267. The reversal of 725440193 is 391044527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 717329089 + 8111104 = 26783^2 + 2848^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725440193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (725440123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362720096 + 362720097.

It is an arithmetic number, because the mean of its divisors is an integer number (362720097).

Almost surely, 2^725440193 is an apocalyptic number.

It is an amenable number.

725440193 is a deficient number, since it is larger than the sum of its proper divisors (1).

725440193 is an equidigital number, since it uses as much as digits as its factorization.

725440193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 725440193 is about 26933.9969740846. The cubic root of 725440193 is about 898.5326678549.

The spelling of 725440193 in words is "seven hundred twenty-five million, four hundred forty thousand, one hundred ninety-three".