2775025009 has 4 divisors (see below), whose sum is σ = 2795280804. Its totient is φ = 2754769216.

The previous prime is 2775024979. The next prime is 2775025063. The reversal of 2775025009 is 9005205772.

2775025009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1406025009 + 1369000000 = 37497^2 + 37000^2 .

It is a cyclic number.

It is not a de Polignac number, because 2775025009 - 2¹⁹ = 2774500721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2775025079) 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, 10127692 + ... + 10127965.

It is an arithmetic number, because the mean of its divisors is an integer number (698820201).

Almost surely, 2^2775025009 is an apocalyptic number.

It is an amenable number.

2775025009 is a deficient number, since it is larger than the sum of its proper divisors (20255795).

2775025009 is a wasteful number, since it uses less digits than its factorization.

2775025009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20255794.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 2775025009 is about 52678.5061386520. The cubic root of 2775025009 is about 1405.2566003389.

The spelling of 2775025009 in words is "two billion, seven hundred seventy-five million, twenty-five thousand, nine".