2818017225 has 27 divisors (see below), whose sum is σ = 5048808583. Its totient is φ = 1502517840.

The previous prime is 2818017173. The next prime is 2818017229. The reversal of 2818017225 is 5227108182.

The square root of 2818017225 is 53085.

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

It can be written as a sum of positive squares in only one way, i.e., 1014486201 + 1803531024 = 31851^2 + 42468^2 .

It is not a de Polignac number, because 2818017225 - 2²³ = 2809628617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2818017225.

It is not an unprimeable number, because it can be changed into a prime (2818017229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 794506 + ... + 798044.

Almost surely, 2^2818017225 is an apocalyptic number.

2818017225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2818017225 is the 53085-th square number.

2818017225 is the 26543-rd centered octagonal number.

It is an amenable number.

2818017225 is a deficient number, since it is larger than the sum of its proper divisors (2230791358).

2818017225 is an frugal number, since it uses more digits than its factorization.

2818017225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7094 (or 3547 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The cubic root of 2818017225 is about 1412.4764462097.

Multiplying 2818017225 by its sum of digits (36), we get a square (101448620100 = 318510²).

The spelling of 2818017225 in words is "two billion, eight hundred eighteen million, seventeen thousand, two hundred twenty-five".