25694047 has 2 divisors, whose sum is σ = 25694048. Its totient is φ = 25694046.

The previous prime is 25694041. The next prime is 25694057. The reversal of 25694047 is 74049652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25694047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25693997 and 25694015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25694041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12847023 + 12847024.

It is an arithmetic number, because the mean of its divisors is an integer number (12847024).

Almost surely, 2^25694047 is an apocalyptic number.

25694047 is a deficient number, since it is larger than the sum of its proper divisors (1).

25694047 is an equidigital number, since it uses as much as digits as its factorization.

25694047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 25694047 is about 5068.9295714184. The cubic root of 25694047 is about 295.0829872816.

The spelling of 25694047 in words is "twenty-five million, six hundred ninety-four thousand, forty-seven".