825878923161 has 4 divisors (see below), whose sum is σ = 1101171897552. Its totient is φ = 550585948772.

The previous prime is 825878923147. The next prime is 825878923171. The reversal of 825878923161 is 161329878528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 825878923161 - 2⁷ = 825878923033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 825878923095 and 825878923104.

It is not an unprimeable number, because it can be changed into a prime (825878923171) 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, 137646487191 + ... + 137646487196.

It is an arithmetic number, because the mean of its divisors is an integer number (275292974388).

Almost surely, 2^825878923161 is an apocalyptic number.

It is an amenable number.

825878923161 is a deficient number, since it is larger than the sum of its proper divisors (275292974391).

825878923161 is a wasteful number, since it uses less digits than its factorization.

825878923161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275292974390.

The product of its digits is 11612160, while the sum is 60.

The spelling of 825878923161 in words is "eight hundred twenty-five billion, eight hundred seventy-eight million, nine hundred twenty-three thousand, one hundred sixty-one".