2181060225 has 36 divisors (see below), whose sum is σ = 3922963200. Its totient is φ = 1158336480.

The previous prime is 2181060221. The next prime is 2181060241. The reversal of 2181060225 is 5220601812.

It is a happy number.

2181060225 is a `hidden beast` number, since 21 + 8 + 10 + 602 + 25 = 666.

It is not a de Polignac number, because 2181060225 - 2² = 2181060221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2181060221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33496 + ... + 74054.

It is an arithmetic number, because the mean of its divisors is an integer number (108971200).

Almost surely, 2^2181060225 is an apocalyptic number.

2181060225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2181060225 is a deficient number, since it is larger than the sum of its proper divisors (1741902975).

2181060225 is a wasteful number, since it uses less digits than its factorization.

2181060225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40814 (or 40806 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2181060225 is about 46701.8225019110. The cubic root of 2181060225 is about 1296.8484260099.

The spelling of 2181060225 in words is "two billion, one hundred eighty-one million, sixty thousand, two hundred twenty-five".