25442793587 has 24 divisors (see below), whose sum is σ = 26782973568. Its totient is φ = 24143961600.

The previous prime is 25442793533. The next prime is 25442793599. The reversal of 25442793587 is 78539724452.

It is not a de Polignac number, because 25442793587 - 2¹⁰ = 25442792563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25442792587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38491037 + ... + 38491697.

It is an arithmetic number, because the mean of its divisors is an integer number (1115957232).

Almost surely, 2^25442793587 is an apocalyptic number.

25442793587 is a deficient number, since it is larger than the sum of its proper divisors (1340179981).

25442793587 is an equidigital number, since it uses as much as digits as its factorization.

25442793587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071 (or 998 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 56.

The spelling of 25442793587 in words is "twenty-five billion, four hundred forty-two million, seven hundred ninety-three thousand, five hundred eighty-seven".