25385587 has 2 divisors, whose sum is σ = 25385588. Its totient is φ = 25385586.

The previous prime is 25385567. The next prime is 25385597. The reversal of 25385587 is 78558352.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25385587 is a prime.

It is not a weakly prime, because it can be changed into another prime (25385567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12692793 + 12692794.

It is an arithmetic number, because the mean of its divisors is an integer number (12692794).

Almost surely, 2^25385587 is an apocalyptic number.

25385587 is a deficient number, since it is larger than the sum of its proper divisors (1).

25385587 is an equidigital number, since it uses as much as digits as its factorization.

25385587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336000, while the sum is 43.

The square root of 25385587 is about 5038.4111582919. The cubic root of 25385587 is about 293.8973950498.

The spelling of 25385587 in words is "twenty-five million, three hundred eighty-five thousand, five hundred eighty-seven".