181225350 has 120 divisors (see below), whose sum is σ = 521238960. Its totient is φ = 46630080.

The previous prime is 181225309. The next prime is 181225351. The reversal of 181225350 is 53522181.

It is a happy number.

181225350 is a `hidden beast` number, since 1 + 8 + 122 + 535 + 0 = 666.

181225350 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181225351) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 116679 + ... + 118221.

It is an arithmetic number, because the mean of its divisors is an integer number (4343658).

Almost surely, 2^181225350 is an apocalyptic number.

181225350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 181225350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260619480).

181225350 is an abundant number, since it is smaller than the sum of its proper divisors (340013610).

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

181225350 is a wasteful number, since it uses less digits than its factorization.

181225350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596 (or 1582 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 181225350 is about 13461.9965086907. The cubic root of 181225350 is about 565.8999415246.

The spelling of 181225350 in words is "one hundred eighty-one million, two hundred twenty-five thousand, three hundred fifty".