25434552971 has 2 divisors, whose sum is σ = 25434552972. Its totient is φ = 25434552970.

The previous prime is 25434552943. The next prime is 25434553051. The reversal of 25434552971 is 17925543452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25434552971 - 2²⁶ = 25367444107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25434552271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12717276485 + 12717276486.

It is an arithmetic number, because the mean of its divisors is an integer number (12717276486).

Almost surely, 2^25434552971 is an apocalyptic number.

25434552971 is a deficient number, since it is larger than the sum of its proper divisors (1).

25434552971 is an equidigital number, since it uses as much as digits as its factorization.

25434552971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512000, while the sum is 47.

The spelling of 25434552971 in words is "twenty-five billion, four hundred thirty-four million, five hundred fifty-two thousand, nine hundred seventy-one".