2825807805 has 12 divisors (see below), whose sum is σ = 4898066940. Its totient is φ = 1507097472.

The previous prime is 2825807753. The next prime is 2825807819. The reversal of 2825807805 is 5087085282.

It can be written as a sum of positive squares in 2 ways, for example, as 713210436 + 2112597369 = 26706^2 + 45963^2 .

It is not a de Polignac number, because 2825807805 - 2¹¹ = 2825805757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 62795729 = 2825807805 / (2 + 8 + 2 + 5 + 8 + 0 + 7 + 8 + 0 + 5).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31397820 + ... + 31397909.

It is an arithmetic number, because the mean of its divisors is an integer number (408172245).

Almost surely, 2^2825807805 is an apocalyptic number.

It is an amenable number.

2825807805 is a deficient number, since it is larger than the sum of its proper divisors (2072259135).

2825807805 is a wasteful number, since it uses less digits than its factorization.

2825807805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62795740 (or 62795737 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 2825807805 is about 53158.3277107172. The cubic root of 2825807805 is about 1413.7768742531.

The spelling of 2825807805 in words is "two billion, eight hundred twenty-five million, eight hundred seven thousand, eight hundred five".