25432442587 has 8 divisors (see below), whose sum is σ = 25793864640. Its totient is φ = 25072008000.

The previous prime is 25432442543. The next prime is 25432442599. The reversal of 25432442587 is 78524423452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25432442587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25432442537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194914 + ... + 298087.

It is an arithmetic number, because the mean of its divisors is an integer number (3224233080).

Almost surely, 2^25432442587 is an apocalyptic number.

25432442587 is a deficient number, since it is larger than the sum of its proper divisors (361422053).

25432442587 is an equidigital number, since it uses as much as digits as its factorization.

25432442587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493733.

The product of its digits is 2150400, while the sum is 46.

The spelling of 25432442587 in words is "twenty-five billion, four hundred thirty-two million, four hundred forty-two thousand, five hundred eighty-seven".