25486387 has 2 divisors, whose sum is σ = 25486388. Its totient is φ = 25486386.

The previous prime is 25486381. The next prime is 25486397. The reversal of 25486387 is 78368452.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25486387 is a prime.

It is not a weakly prime, because it can be changed into another prime (25486381) 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, 12743193 + 12743194.

It is an arithmetic number, because the mean of its divisors is an integer number (12743194).

Almost surely, 2^25486387 is an apocalyptic number.

25486387 is a deficient number, since it is larger than the sum of its proper divisors (1).

25486387 is an equidigital number, since it uses as much as digits as its factorization.

25486387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 43.

The square root of 25486387 is about 5048.4044013926. The cubic root of 25486387 is about 294.2858797000.

The spelling of 25486387 in words is "twenty-five million, four hundred eighty-six thousand, three hundred eighty-seven".