25466531243 has 2 divisors, whose sum is σ = 25466531244. Its totient is φ = 25466531242.

The previous prime is 25466531213. The next prime is 25466531249. The reversal of 25466531243 is 34213566452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25466531243 - 2⁶ = 25466531179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25466531243.

It is not a weakly prime, because it can be changed into another prime (25466531249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12733265621 + 12733265622.

It is an arithmetic number, because the mean of its divisors is an integer number (12733265622).

Almost surely, 2^25466531243 is an apocalyptic number.

25466531243 is a deficient number, since it is larger than the sum of its proper divisors (1).

25466531243 is an equidigital number, since it uses as much as digits as its factorization.

25466531243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 41.

The spelling of 25466531243 in words is "twenty-five billion, four hundred sixty-six million, five hundred thirty-one thousand, two hundred forty-three".