25406253043 has 2 divisors, whose sum is σ = 25406253044. Its totient is φ = 25406253042.

The previous prime is 25406253023. The next prime is 25406253107. The reversal of 25406253043 is 34035260452.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25406253043 is a prime.

It is not a weakly prime, because it can be changed into another prime (25406253023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12703126521 + 12703126522.

It is an arithmetic number, because the mean of its divisors is an integer number (12703126522).

Almost surely, 2^25406253043 is an apocalyptic number.

25406253043 is a deficient number, since it is larger than the sum of its proper divisors (1).

25406253043 is an equidigital number, since it uses as much as digits as its factorization.

25406253043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 34.

The spelling of 25406253043 in words is "twenty-five billion, four hundred six million, two hundred fifty-three thousand, forty-three".