825965808173 has 4 divisors (see below), whose sum is σ = 901053608928. Its totient is φ = 750878007420.

The previous prime is 825965808169. The next prime is 825965808193. The reversal of 825965808173 is 371808569528.

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 825965808173 - 2² = 825965808169 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825965808113) 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 3 ways as a sum of consecutive naturals, for example, 37543900361 + ... + 37543900382.

It is an arithmetic number, because the mean of its divisors is an integer number (225263402232).

Almost surely, 2^825965808173 is an apocalyptic number.

It is an amenable number.

825965808173 is a deficient number, since it is larger than the sum of its proper divisors (75087800755).

825965808173 is a wasteful number, since it uses less digits than its factorization.

825965808173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75087800754.

The product of its (nonzero) digits is 29030400, while the sum is 62.

The spelling of 825965808173 in words is "eight hundred twenty-five billion, nine hundred sixty-five million, eight hundred eight thousand, one hundred seventy-three".