2805825243 has 16 divisors (see below), whose sum is σ = 4029837056. Its totient is φ = 1726250400.

The previous prime is 2805825229. The next prime is 2805825251. The reversal of 2805825243 is 3425285082.

It is a de Polignac number, because none of the positive numbers 2^k-2805825243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2805825943) 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, 281796 + ... + 291582.

It is an arithmetic number, because the mean of its divisors is an integer number (251864816).

Almost surely, 2^2805825243 is an apocalyptic number.

2805825243 is a deficient number, since it is larger than the sum of its proper divisors (1224011813).

2805825243 is a wasteful number, since it uses less digits than its factorization.

2805825243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17154.

The product of its (nonzero) digits is 153600, while the sum is 39.

The square root of 2805825243 is about 52970.0409948869. The cubic root of 2805825243 is about 1410.4365033538.

It can be divided in two parts, 28058 and 25243, that added together give a triangular number (53301 = T₃₂₆).

The spelling of 2805825243 in words is "two billion, eight hundred five million, eight hundred twenty-five thousand, two hundred forty-three".