28225775703161 has 4 divisors (see below), whose sum is σ = 28350118327632. Its totient is φ = 28101433078692.

The previous prime is 28225775703143. The next prime is 28225775703163. The reversal of 28225775703161 is 16130757752282.

It is a happy number.

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 28225775703161 - 2²⁶ = 28225708594297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28225775703097 and 28225775703106.

It is not an unprimeable number, because it can be changed into a prime (28225775703163) 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, 62171311895 + ... + 62171312348.

It is an arithmetic number, because the mean of its divisors is an integer number (7087529581908).

Almost surely, 2^{28225775703161} is an apocalyptic number.

It is an amenable number.

28225775703161 is a deficient number, since it is larger than the sum of its proper divisors (124342624471).

28225775703161 is a wasteful number, since it uses less digits than its factorization.

28225775703161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124342624470.

The product of its (nonzero) digits is 9878400, while the sum is 56.

The spelling of 28225775703161 in words is "twenty-eight trillion, two hundred twenty-five billion, seven hundred seventy-five million, seven hundred three thousand, one hundred sixty-one".