25987407587 has 8 divisors (see below), whose sum is σ = 27061566240. Its totient is φ = 24925118400.

The previous prime is 25987407577. The next prime is 25987407623. The reversal of 25987407587 is 78570478952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25987407587 - 2²⁰ = 25986359011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25987407517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2962898 + ... + 2971655.

It is an arithmetic number, because the mean of its divisors is an integer number (3382695780).

Almost surely, 2^25987407587 is an apocalyptic number.

25987407587 is a deficient number, since it is larger than the sum of its proper divisors (1074158653).

25987407587 is a wasteful number, since it uses less digits than its factorization.

25987407587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5934733.

The product of its (nonzero) digits is 39513600, while the sum is 62.

The spelling of 25987407587 in words is "twenty-five billion, nine hundred eighty-seven million, four hundred seven thousand, five hundred eighty-seven".