25343049647 has 2 divisors, whose sum is σ = 25343049648. Its totient is φ = 25343049646.

The previous prime is 25343049643. The next prime is 25343049649. The reversal of 25343049647 is 74694034352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25343049647 - 2² = 25343049643 is a prime.

Together with 25343049649, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25343049643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12671524823 + 12671524824.

It is an arithmetic number, because the mean of its divisors is an integer number (12671524824).

Almost surely, 2^25343049647 is an apocalyptic number.

25343049647 is a deficient number, since it is larger than the sum of its proper divisors (1).

25343049647 is an equidigital number, since it uses as much as digits as its factorization.

25343049647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 47.

The spelling of 25343049647 in words is "twenty-five billion, three hundred forty-three million, forty-nine thousand, six hundred forty-seven".