2733721225 has 9 divisors (see below), whose sum is σ = 3390138517. Its totient is φ = 2186767840.

The previous prime is 2733721223. The next prime is 2733721253. The reversal of 2733721225 is 5221273372.

The square root of 2733721225 is 52285.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 285846649 + 2447874576 = 16907^2 + 49476^2 .

It is not a de Polignac number, because 2733721225 - 2¹ = 2733721223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2733721223) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 256197 + ... + 266653.

Almost surely, 2^2733721225 is an apocalyptic number.

2733721225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2733721225 is the 52285-th square number.

2733721225 is the 26143-rd centered octagonal number.

It is an amenable number.

2733721225 is a deficient number, since it is larger than the sum of its proper divisors (656417292).

2733721225 is an frugal number, since it uses more digits than its factorization.

2733721225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20924 (or 10462 counting only the distinct ones).

The product of its digits is 35280, while the sum is 34.

The cubic root of 2733721225 is about 1398.2497217298.

Adding to 2733721225 its reverse (5221273372), we get a palindrome (7954994597).

The spelling of 2733721225 in words is "two billion, seven hundred thirty-three million, seven hundred twenty-one thousand, two hundred twenty-five".