162224725 has 24 divisors (see below), whose sum is σ = 217251720. Its totient is φ = 119454720.

The previous prime is 162224707. The next prime is 162224729. The reversal of 162224725 is 527422261.

It can be written as a sum of positive squares in 12 ways, for example, as 86899684 + 75325041 = 9322^2 + 8679^2 .

It is not a de Polignac number, because 162224725 - 2¹¹ = 162222677 is a prime.

It is a super-2 number, since 2×162224725² = 52633722802651250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162224729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200121 + ... + 200929.

It is an arithmetic number, because the mean of its divisors is an integer number (9052155).

Almost surely, 2^162224725 is an apocalyptic number.

It is an amenable number.

162224725 is a deficient number, since it is larger than the sum of its proper divisors (55026995).

162224725 is a wasteful number, since it uses less digits than its factorization.

162224725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449 (or 1444 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 162224725 is about 12736.7470336817. The cubic root of 162224725 is about 545.3881307815.

Adding to 162224725 its reverse (527422261), we get a palindrome (689646986).

The spelling of 162224725 in words is "one hundred sixty-two million, two hundred twenty-four thousand, seven hundred twenty-five".