25628671 has 2 divisors, whose sum is σ = 25628672. Its totient is φ = 25628670.

The previous prime is 25628641. The next prime is 25628689. The reversal of 25628671 is 17682652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25628671 - 2⁷ = 25628543 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 25628671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25628611) 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, 12814335 + 12814336.

It is an arithmetic number, because the mean of its divisors is an integer number (12814336).

Almost surely, 2^25628671 is an apocalyptic number.

25628671 is a deficient number, since it is larger than the sum of its proper divisors (1).

25628671 is an equidigital number, since it uses as much as digits as its factorization.

25628671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 25628671 is about 5062.4767653788. The cubic root of 25628671 is about 294.8325047451.

The spelling of 25628671 in words is "twenty-five million, six hundred twenty-eight thousand, six hundred seventy-one".