181225326 has 32 divisors (see below), whose sum is σ = 386270208. Its totient is φ = 56550560.

The previous prime is 181225309. The next prime is 181225351. The reversal of 181225326 is 623522181.

It is a junction number, because it is equal to n+sod(n) for n = 181225293 and 181225302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7485 + ... + 20456.

It is an arithmetic number, because the mean of its divisors is an integer number (12070944).

Almost surely, 2^181225326 is an apocalyptic number.

181225326 is an abundant number, since it is smaller than the sum of its proper divisors (205044882).

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

181225326 is a wasteful number, since it uses less digits than its factorization.

181225326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28016.

The product of its digits is 5760, while the sum is 30.

The square root of 181225326 is about 13461.9956172924. The cubic root of 181225326 is about 565.8999165435.

The spelling of 181225326 in words is "one hundred eighty-one million, two hundred twenty-five thousand, three hundred twenty-six".