25775803243 has 2 divisors, whose sum is σ = 25775803244. Its totient is φ = 25775803242.

The previous prime is 25775803181. The next prime is 25775803367. The reversal of 25775803243 is 34230857752.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25775803243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25775803193 and 25775803202.

It is not a weakly prime, because it can be changed into another prime (25775803643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12887901621 + 12887901622.

It is an arithmetic number, because the mean of its divisors is an integer number (12887901622).

Almost surely, 2^25775803243 is an apocalyptic number.

25775803243 is a deficient number, since it is larger than the sum of its proper divisors (1).

25775803243 is an equidigital number, since it uses as much as digits as its factorization.

25775803243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 46.

The spelling of 25775803243 in words is "twenty-five billion, seven hundred seventy-five million, eight hundred three thousand, two hundred forty-three".