25870583587 has 4 divisors (see below), whose sum is σ = 25873720480. Its totient is φ = 25867446696.

The previous prime is 25870583573. The next prime is 25870583591. The reversal of 25870583587 is 78538507852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25870583587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25870583887) 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 in 3 ways as a sum of consecutive naturals, for example, 1556043 + ... + 1572580.

It is an arithmetic number, because the mean of its divisors is an integer number (6468430120).

Almost surely, 2^25870583587 is an apocalyptic number.

25870583587 is a deficient number, since it is larger than the sum of its proper divisors (3136893).

25870583587 is an equidigital number, since it uses as much as digits as its factorization.

25870583587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136892.

The product of its (nonzero) digits is 18816000, while the sum is 58.

The spelling of 25870583587 in words is "twenty-five billion, eight hundred seventy million, five hundred eighty-three thousand, five hundred eighty-seven".