163225361 has 4 divisors (see below), whose sum is σ = 175781172. Its totient is φ = 150669552.

The previous prime is 163225351. The next prime is 163225367. The reversal of 163225361 is 163522361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163522361 = 809 ⋅202129.

It can be written as a sum of positive squares in 2 ways, for example, as 77088400 + 86136961 = 8780^2 + 9281^2 .

It is a cyclic number.

It is not a de Polignac number, because 163225361 - 2²² = 159031057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163225367) 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, 6277886 + ... + 6277911.

It is an arithmetic number, because the mean of its divisors is an integer number (43945293).

Almost surely, 2^163225361 is an apocalyptic number.

It is an amenable number.

163225361 is a deficient number, since it is larger than the sum of its proper divisors (12555811).

163225361 is a wasteful number, since it uses less digits than its factorization.

163225361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12555810.

The product of its digits is 6480, while the sum is 29.

The square root of 163225361 is about 12775.9681042182. The cubic root of 163225361 is about 546.5071890463.

The spelling of 163225361 in words is "one hundred sixty-three million, two hundred twenty-five thousand, three hundred sixty-one".