22125161 has 8 divisors (see below), whose sum is σ = 22440000. Its totient is φ = 21812400.

The previous prime is 22125151. The next prime is 22125163. The reversal of 22125161 is 16152122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22125161 - 2¹⁴ = 22108777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22125163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44090 + ... + 44588.

It is an arithmetic number, because the mean of its divisors is an integer number (2805000).

Almost surely, 2^22125161 is an apocalyptic number.

It is an amenable number.

22125161 is a deficient number, since it is larger than the sum of its proper divisors (314839).

22125161 is a wasteful number, since it uses less digits than its factorization.

22125161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039.

The product of its digits is 240, while the sum is 20.

The square root of 22125161 is about 4703.7390446325. The cubic root of 22125161 is about 280.7343013493.

Adding to 22125161 its reverse (16152122), we get a palindrome (38277283).

The spelling of 22125161 in words is "twenty-two million, one hundred twenty-five thousand, one hundred sixty-one".