68225161 has 4 divisors (see below), whose sum is σ = 68256000. Its totient is φ = 68194324.

The previous prime is 68225159. The next prime is 68225167. The reversal of 68225161 is 16152286.

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 68225161 - 2¹ = 68225159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68225167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11821 + ... + 16618.

It is an arithmetic number, because the mean of its divisors is an integer number (17064000).

Almost surely, 2^68225161 is an apocalyptic number.

It is an amenable number.

68225161 is a deficient number, since it is larger than the sum of its proper divisors (30839).

68225161 is a wasteful number, since it uses less digits than its factorization.

68225161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30838.

The product of its digits is 5760, while the sum is 31.

The square root of 68225161 is about 8259.8523594553. The cubic root of 68225161 is about 408.6155185473.

It can be divided in two parts, 68225 and 161, that added together give a palindrome (68386).

The spelling of 68225161 in words is "sixty-eight million, two hundred twenty-five thousand, one hundred sixty-one".