25485689539 has 8 divisors (see below), whose sum is σ = 26871840000. Its totient is φ = 24104018952.

The previous prime is 25485689521. The next prime is 25485689573. The reversal of 25485689539 is 93598658452.

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 25485689539 - 2⁵ = 25485689507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25485681539) 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 7 ways as a sum of consecutive naturals, for example, 1108279 + ... + 1131040.

It is an arithmetic number, because the mean of its divisors is an integer number (3358980000).

Almost surely, 2^25485689539 is an apocalyptic number.

25485689539 is a deficient number, since it is larger than the sum of its proper divisors (1386150461).

25485689539 is a wasteful number, since it uses less digits than its factorization.

25485689539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239937.

The product of its digits is 93312000, while the sum is 64.

The spelling of 25485689539 in words is "twenty-five billion, four hundred eighty-five million, six hundred eighty-nine thousand, five hundred thirty-nine".