2011806725 has 6 divisors (see below), whose sum is σ = 2494640370. Its totient is φ = 1609445360.

The previous prime is 2011806689. The next prime is 2011806733. The reversal of 2011806725 is 5276081102.

It can be written as a sum of positive squares in 3 ways, for example, as 645617281 + 1366189444 = 25409^2 + 36962^2 .

It is not a de Polignac number, because 2011806725 - 2¹⁰ = 2011805701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011806691 and 2011806700.

It is a congruent number.

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, 40236110 + ... + 40236159.

It is an arithmetic number, because the mean of its divisors is an integer number (415773395).

Almost surely, 2^2011806725 is an apocalyptic number.

2011806725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2011806725 is a deficient number, since it is larger than the sum of its proper divisors (482833645).

2011806725 is an equidigital number, since it uses as much as digits as its factorization.

2011806725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80472279 (or 80472274 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 2011806725 is about 44853.1685056920. The cubic root of 2011806725 is about 1262.3954440747.

Adding to 2011806725 its reverse (5276081102), we get a palindrome (7287887827).

The spelling of 2011806725 in words is "two billion, eleven million, eight hundred six thousand, seven hundred twenty-five".