2072721225 has 24 divisors (see below), whose sum is σ = 3537448192. Its totient is φ = 1069790400.

The previous prime is 2072721181. The next prime is 2072721251. The reversal of 2072721225 is 5221272702.

It is not a de Polignac number, because 2072721225 - 2²⁶ = 2005612361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2072721192 and 2072721201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 443422 + ... + 448071.

Almost surely, 2^2072721225 is an apocalyptic number.

2072721225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2072721225 is a deficient number, since it is larger than the sum of its proper divisors (1464726967).

2072721225 is a wasteful number, since it uses less digits than its factorization.

2072721225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891537 (or 891532 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 2072721225 is about 45527.1482194965. The cubic root of 2072721225 is about 1275.0101191046.

Adding to 2072721225 its reverse (5221272702), we get a palindrome (7293993927).

The spelling of 2072721225 in words is "two billion, seventy-two million, seven hundred twenty-one thousand, two hundred twenty-five".