4518397825 has 24 divisors (see below), whose sum is σ = 5754303576. Its totient is φ = 3517440000.

The previous prime is 4518397799. The next prime is 4518397861. The reversal of 4518397825 is 5287938154.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 1680918001 + 2837479824 = 40999^2 + 53268^2 .

It is not a de Polignac number, because 4518397825 - 2⁹ = 4518397313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405529 + ... + 416521.

It is an arithmetic number, because the mean of its divisors is an integer number (239762649).

Almost surely, 2^4518397825 is an apocalyptic number.

It is an amenable number.

4518397825 is a deficient number, since it is larger than the sum of its proper divisors (1235905751).

4518397825 is a wasteful number, since it uses less digits than its factorization.

4518397825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11445 (or 11440 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 52.

The square root of 4518397825 is about 67219.0287418674. The cubic root of 4518397825 is about 1653.2105014602.

The spelling of 4518397825 in words is "four billion, five hundred eighteen million, three hundred ninety-seven thousand, eight hundred twenty-five".