725507017 has 2 divisors, whose sum is σ = 725507018. Its totient is φ = 725507016.

The previous prime is 725506979. The next prime is 725507023. The reversal of 725507017 is 710705527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 412252416 + 313254601 = 20304^2 + 17699^2 .

It is a cyclic number.

It is not a de Polignac number, because 725507017 - 2²⁷ = 591289289 is a prime.

It is not a weakly prime, because it can be changed into another prime (725507047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362753508 + 362753509.

It is an arithmetic number, because the mean of its divisors is an integer number (362753509).

Almost surely, 2^725507017 is an apocalyptic number.

It is an amenable number.

725507017 is a deficient number, since it is larger than the sum of its proper divisors (1).

725507017 is an equidigital number, since it uses as much as digits as its factorization.

725507017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17150, while the sum is 34.

The square root of 725507017 is about 26935.2374595065. The cubic root of 725507017 is about 898.5602564850.

The spelling of 725507017 in words is "seven hundred twenty-five million, five hundred seven thousand, seventeen".