2573561065 has 16 divisors (see below), whose sum is σ = 3382696080. Its totient is φ = 1870919680.

The previous prime is 2573561059. The next prime is 2573561083. The reversal of 2573561065 is 5601653752.

It can be written as a sum of positive squares in 8 ways, for example, as 471888729 + 2101672336 = 21723^2 + 45844^2 .

It is not a de Polignac number, because 2573561065 - 2⁵ = 2573561033 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 519556 + ... + 524485.

It is an arithmetic number, because the mean of its divisors is an integer number (211418505).

Almost surely, 2^2573561065 is an apocalyptic number.

It is an amenable number.

2573561065 is a deficient number, since it is larger than the sum of its proper divisors (809135015).

2573561065 is a wasteful number, since it uses less digits than its factorization.

2573561065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044092.

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 2573561065 is about 50730.2775963231. The cubic root of 2573561065 is about 1370.3920353183.

The spelling of 2573561065 in words is "two billion, five hundred seventy-three million, five hundred sixty-one thousand, sixty-five".