2575536821 has 16 divisors (see below), whose sum is σ = 3029140800. Its totient is φ = 2158907520.

The previous prime is 2575536791. The next prime is 2575536841. The reversal of 2575536821 is 1286355752.

It is not a de Polignac number, because 2575536821 - 2¹⁰ = 2575535797 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 (2575536841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126830 + ... + 145728.

It is an arithmetic number, because the mean of its divisors is an integer number (189321300).

Almost surely, 2^2575536821 is an apocalyptic number.

It is an amenable number.

2575536821 is a deficient number, since it is larger than the sum of its proper divisors (453603979).

2575536821 is a wasteful number, since it uses less digits than its factorization.

2575536821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19876.

The product of its digits is 504000, while the sum is 44.

The square root of 2575536821 is about 50749.7470042955. The cubic root of 2575536821 is about 1370.7426348232.

The spelling of 2575536821 in words is "two billion, five hundred seventy-five million, five hundred thirty-six thousand, eight hundred twenty-one".