25011671 has 2 divisors, whose sum is σ = 25011672. Its totient is φ = 25011670.

The previous prime is 25011653. The next prime is 25011673. The reversal of 25011671 is 17611052.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25011671 is a prime.

It is a Sophie Germain prime.

Together with 25011673, 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 (25011673) 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, 12505835 + 12505836.

It is an arithmetic number, because the mean of its divisors is an integer number (12505836).

Almost surely, 2^25011671 is an apocalyptic number.

25011671 is a deficient number, since it is larger than the sum of its proper divisors (1).

25011671 is an equidigital number, since it uses as much as digits as its factorization.

25011671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 25011671 is about 5001.1669638195. The cubic root of 25011671 is about 292.4472683572.

The spelling of 25011671 in words is "twenty-five million, eleven thousand, six hundred seventy-one".