511201645025 has 6 divisors (see below), whose sum is σ = 633890039862. Its totient is φ = 408961316000.

The previous prime is 511201644997. The next prime is 511201645039. The reversal of 511201645025 is 520546102115.

It can be written as a sum of positive squares in 3 ways, for example, as 175718579344 + 335483065681 = 419188^2 + 579209^2 .

It is not a de Polignac number, because 511201645025 - 2²⁶ = 511134536161 is a prime.

It is a super-2 number, since 2×511201645025² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 511201644982 and 511201645000.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10224032876 + ... + 10224032925.

It is an arithmetic number, because the mean of its divisors is an integer number (105648339977).

Almost surely, 2^511201645025 is an apocalyptic number.

It is an amenable number.

511201645025 is a deficient number, since it is larger than the sum of its proper divisors (122688394837).

511201645025 is a wasteful number, since it uses less digits than its factorization.

511201645025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20448065811 (or 20448065806 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 511201645025 in words is "five hundred eleven billion, two hundred one million, six hundred forty-five thousand, twenty-five".