825981161892 has 24 divisors (see below), whose sum is σ = 1927768796352. Its totient is φ = 275258565600.

The previous prime is 825981161869. The next prime is 825981161909. The reversal of 825981161892 is 298161189528.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8510784 + ... + 8607287.

It is an arithmetic number, because the mean of its divisors is an integer number (80323699848).

Almost surely, 2^825981161892 is an apocalyptic number.

It is an amenable number.

825981161892 is an abundant number, since it is smaller than the sum of its proper divisors (1101787634460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

825981161892 is a wasteful number, since it uses less digits than its factorization.

825981161892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17122099 (or 17122097 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 60.

The spelling of 825981161892 in words is "eight hundred twenty-five billion, nine hundred eighty-one million, one hundred sixty-one thousand, eight hundred ninety-two".