725245317 has 12 divisors (see below), whose sum is σ = 1049063340. Its totient is φ = 482810688.

The previous prime is 725245309. The next prime is 725245321. The reversal of 725245317 is 713542527.

725245317 is a `hidden beast` number, since 72 + 52 + 4 + 531 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 359709156 + 365536161 = 18966^2 + 19119^2 .

It is not a de Polignac number, because 725245317 - 2³ = 725245309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725245307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50448 + ... + 63209.

It is an arithmetic number, because the mean of its divisors is an integer number (87421945).

Almost surely, 2^725245317 is an apocalyptic number.

It is an amenable number.

725245317 is a deficient number, since it is larger than the sum of its proper divisors (323818023).

725245317 is a wasteful number, since it uses less digits than its factorization.

725245317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114372 (or 114369 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 725245317 is about 26930.3790727127. The cubic root of 725245317 is about 898.4522026259.

It can be divided in two parts, 72524 and 5317, that added together give a square (77841 = 279²).

The spelling of 725245317 in words is "seven hundred twenty-five million, two hundred forty-five thousand, three hundred seventeen".