2575828021 has 8 divisors (see below), whose sum is σ = 2775534104. Its totient is φ = 2376345600.

The previous prime is 2575828019. The next prime is 2575828027. The reversal of 2575828021 is 1208285752.

It can be written as a sum of positive squares in 4 ways, for example, as 70324996 + 2505503025 = 8386^2 + 50055^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2575828021 - 2¹ = 2575828019 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 (2575828027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31596 + ... + 78421.

It is an arithmetic number, because the mean of its divisors is an integer number (346941763).

Almost surely, 2^2575828021 is an apocalyptic number.

It is an amenable number.

2575828021 is a deficient number, since it is larger than the sum of its proper divisors (199706083).

2575828021 is a wasteful number, since it uses less digits than its factorization.

2575828021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111831.

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 2575828021 is about 50752.6159030251. The cubic root of 2575828021 is about 1370.7942933369.

The spelling of 2575828021 in words is "two billion, five hundred seventy-five million, eight hundred twenty-eight thousand, twenty-one".