25787287 has 2 divisors, whose sum is σ = 25787288. Its totient is φ = 25787286.

The previous prime is 25787269. The next prime is 25787291. The reversal of 25787287 is 78278752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25787287 - 2¹¹ = 25785239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25787387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12893643 + 12893644.

It is an arithmetic number, because the mean of its divisors is an integer number (12893644).

Almost surely, 2^25787287 is an apocalyptic number.

25787287 is a deficient number, since it is larger than the sum of its proper divisors (1).

25787287 is an equidigital number, since it uses as much as digits as its factorization.

25787287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 439040, while the sum is 46.

The square root of 25787287 is about 5078.1184507650. The cubic root of 25787287 is about 295.4394942937.

The spelling of 25787287 in words is "twenty-five million, seven hundred eighty-seven thousand, two hundred eighty-seven".