825349127987 has 4 divisors (see below), whose sum is σ = 828002984016. Its totient is φ = 822695271960.

The previous prime is 825349127971. The next prime is 825349128073. The reversal of 825349127987 is 789721943528.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 825349127987 - 2⁴ = 825349127971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825349127947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1326927548 + ... + 1326928169.

It is an arithmetic number, because the mean of its divisors is an integer number (207000746004).

Almost surely, 2^825349127987 is an apocalyptic number.

825349127987 is a deficient number, since it is larger than the sum of its proper divisors (2653856029).

825349127987 is a wasteful number, since it uses less digits than its factorization.

825349127987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653856028.

The product of its digits is 60963840, while the sum is 65.

The spelling of 825349127987 in words is "eight hundred twenty-five billion, three hundred forty-nine million, one hundred twenty-seven thousand, nine hundred eighty-seven".