4551640325 has 6 divisors (see below), whose sum is σ = 5644034034. Its totient is φ = 3641312240.

The previous prime is 4551640309. The next prime is 4551640409. The reversal of 4551640325 is 5230461554.

It can be written as a sum of positive squares in 3 ways, for example, as 61434244 + 4490206081 = 7838^2 + 67009^2 .

It is not a de Polignac number, because 4551640325 - 2⁴ = 4551640309 is a prime.

It is a super-2 number, since 2×4551640325² = 41434859296332211250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 91032782 + ... + 91032831.

It is an arithmetic number, because the mean of its divisors is an integer number (940672339).

Almost surely, 2^4551640325 is an apocalyptic number.

It is an amenable number.

4551640325 is a deficient number, since it is larger than the sum of its proper divisors (1092393709).

4551640325 is a wasteful number, since it uses less digits than its factorization.

4551640325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182065623 (or 182065618 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 4551640325 is about 67465.8456183571. The cubic root of 4551640325 is about 1657.2549013602.

The spelling of 4551640325 in words is "four billion, five hundred fifty-one million, six hundred forty thousand, three hundred twenty-five".