5200525081 has 4 divisors (see below), whose sum is σ = 5205849012. Its totient is φ = 5195201152.

The previous prime is 5200525073. The next prime is 5200525133. The reversal of 5200525081 is 1805250025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3672966025 + 1527559056 = 60605^2 + 39084^2 .

It is a cyclic number.

It is not a de Polignac number, because 5200525081 - 2³ = 5200525073 is a prime.

It is a super-2 number, since 2×5200525081² = 54090922236220113122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5200525061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2660500 + ... + 2662453.

It is an arithmetic number, because the mean of its divisors is an integer number (1301462253).

Almost surely, 2^5200525081 is an apocalyptic number.

It is an amenable number.

5200525081 is a deficient number, since it is larger than the sum of its proper divisors (5323931).

5200525081 is an equidigital number, since it uses as much as digits as its factorization.

5200525081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5323930.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 5200525081 is about 72114.6661990472. Note that the first 3 decimals coincide. The cubic root of 5200525081 is about 1732.5365222699.

The spelling of 5200525081 in words is "five billion, two hundred million, five hundred twenty-five thousand, eighty-one".