25434347 has 2 divisors, whose sum is σ = 25434348. Its totient is φ = 25434346.

The previous prime is 25434341. The next prime is 25434349. The reversal of 25434347 is 74343452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25434347 is a prime.

Together with 25434349, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (25434341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12717173 + 12717174.

It is an arithmetic number, because the mean of its divisors is an integer number (12717174).

Almost surely, 2^25434347 is an apocalyptic number.

25434347 is a deficient number, since it is larger than the sum of its proper divisors (1).

25434347 is an equidigital number, since it uses as much as digits as its factorization.

25434347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 32.

The square root of 25434347 is about 5043.2476639562. The cubic root of 25434347 is about 294.0854449536.

Adding to 25434347 its reverse (74343452), we get a palindrome (99777799).

The spelling of 25434347 in words is "twenty-five million, four hundred thirty-four thousand, three hundred forty-seven".