2120616225 has 216 divisors, whose sum is σ = 4870973952. Its totient is φ = 862617600.

The previous prime is 2120616217. The next prime is 2120616229. The reversal of 2120616225 is 5226160212.

2120616225 is a `hidden beast` number, since 2 + 1 + 20 + 616 + 2 + 25 = 666.

It is not a de Polignac number, because 2120616225 - 2³ = 2120616217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2120616229) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 8251297 + ... + 8251553.

Almost surely, 2^2120616225 is an apocalyptic number.

2120616225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2120616225 is an abundant number, since it is smaller than the sum of its proper divisors (2750357727).

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

2120616225 is a wasteful number, since it uses less digits than its factorization.

2120616225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2120616225 is about 46050.1490225602. The cubic root of 2120616225 is about 1284.7561145450.

Adding to 2120616225 its reverse (5226160212), we get a palindrome (7346776437).

The spelling of 2120616225 in words is "two billion, one hundred twenty million, six hundred sixteen thousand, two hundred twenty-five".