2575802749 has 8 divisors (see below), whose sum is σ = 2775626840. Its totient is φ = 2376219456.

The previous prime is 2575802743. The next prime is 2575802797. The reversal of 2575802749 is 9472085752.

It can be written as a sum of positive squares in 4 ways, for example, as 17264025 + 2558538724 = 4155^2 + 50582^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2575802749 - 2⁵ = 2575802717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2575802743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37662 + ... + 81055.

It is an arithmetic number, because the mean of its divisors is an integer number (346953355).

Almost surely, 2^2575802749 is an apocalyptic number.

It is an amenable number.

2575802749 is a deficient number, since it is larger than the sum of its proper divisors (199824091).

2575802749 is a wasteful number, since it uses less digits than its factorization.

2575802749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120399.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The square root of 2575802749 is about 50752.3669300260. The cubic root of 2575802749 is about 1370.7898102702.

The spelling of 2575802749 in words is "two billion, five hundred seventy-five million, eight hundred two thousand, seven hundred forty-nine".