25740587 has 2 divisors, whose sum is σ = 25740588. Its totient is φ = 25740586.

The previous prime is 25740581. The next prime is 25740619. The reversal of 25740587 is 78504752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25740587 - 2⁸ = 25740331 is a prime.

It is a Chen prime.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 25740587.

It is not a weakly prime, because it can be changed into another prime (25740581) 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, 12870293 + 12870294.

It is an arithmetic number, because the mean of its divisors is an integer number (12870294).

Almost surely, 2^25740587 is an apocalyptic number.

25740587 is a deficient number, since it is larger than the sum of its proper divisors (1).

25740587 is an equidigital number, since it uses as much as digits as its factorization.

25740587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 25740587 is about 5073.5182073193. The cubic root of 25740587 is about 295.2610425184.

The spelling of 25740587 in words is "twenty-five million, seven hundred forty thousand, five hundred eighty-seven".