2575742985 has 12 divisors (see below), whose sum is σ = 4464621252. Its totient is φ = 1373729568.

The previous prime is 2575742977. The next prime is 2575743011. The reversal of 2575742985 is 5892475752.

It can be written as a sum of positive squares in 2 ways, for example, as 1826023824 + 749719161 = 42732^2 + 27381^2 .

It is not a de Polignac number, because 2575742985 - 2³ = 2575742977 is a prime.

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 28619322 + ... + 28619411.

It is an arithmetic number, because the mean of its divisors is an integer number (372051771).

Almost surely, 2^2575742985 is an apocalyptic number.

It is an amenable number.

2575742985 is a deficient number, since it is larger than the sum of its proper divisors (1888878267).

2575742985 is a wasteful number, since it uses less digits than its factorization.

2575742985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57238744 (or 57238741 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 54.

The square root of 2575742985 is about 50751.7781461891. The cubic root of 2575742985 is about 1370.7792084599.

The spelling of 2575742985 in words is "two billion, five hundred seventy-five million, seven hundred forty-two thousand, nine hundred eighty-five".