181225308 has 48 divisors (see below), whose sum is σ = 462107520. Its totient is φ = 54820800.

The previous prime is 181225283. The next prime is 181225309. The reversal of 181225308 is 803522181.

It is a super-3 number, since 3×181225308³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181225309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123483 + ... + 124941.

It is an arithmetic number, because the mean of its divisors is an integer number (9627240).

Almost surely, 2^181225308 is an apocalyptic number.

It is an amenable number.

181225308 is an abundant number, since it is smaller than the sum of its proper divisors (280882212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181225308 is a wasteful number, since it uses less digits than its factorization.

181225308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418 (or 2416 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 181225308 is about 13461.9949487437. The cubic root of 181225308 is about 565.8998978077.

Adding to 181225308 its reverse (803522181), we get a palindrome (984747489).

The spelling of 181225308 in words is "one hundred eighty-one million, two hundred twenty-five thousand, three hundred eight".