25625687 has 2 divisors, whose sum is σ = 25625688. Its totient is φ = 25625686.

The previous prime is 25625683. The next prime is 25625693. The reversal of 25625687 is 78652652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25625687 - 2² = 25625683 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25625683) 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, 12812843 + 12812844.

It is an arithmetic number, because the mean of its divisors is an integer number (12812844).

Almost surely, 2^25625687 is an apocalyptic number.

25625687 is a deficient number, since it is larger than the sum of its proper divisors (1).

25625687 is an equidigital number, since it uses as much as digits as its factorization.

25625687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 41.

The square root of 25625687 is about 5062.1820393976. The cubic root of 25625687 is about 294.8210616450.

The spelling of 25625687 in words is "twenty-five million, six hundred twenty-five thousand, six hundred eighty-seven".