16585238725 has 12 divisors (see below), whose sum is σ = 22435305120. Its totient is φ = 12061991600.

The previous prime is 16585238711. The next prime is 16585238729. The reversal of 16585238725 is 52783258561.

It is not a de Polignac number, because 16585238725 - 2⁹ = 16585238213 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16585238729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30154705 + ... + 30155254.

It is an arithmetic number, because the mean of its divisors is an integer number (1869608760).

Almost surely, 2^16585238725 is an apocalyptic number.

It is an amenable number.

16585238725 is a deficient number, since it is larger than the sum of its proper divisors (5850066395).

16585238725 is a wasteful number, since it uses less digits than its factorization.

16585238725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60309980 (or 60309975 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 52.

The spelling of 16585238725 in words is "sixteen billion, five hundred eighty-five million, two hundred thirty-eight thousand, seven hundred twenty-five".