3318120725 has 12 divisors (see below), whose sum is σ = 4117955556. Its totient is φ = 2652247680.

The previous prime is 3318120721. The next prime is 3318120731. The reversal of 3318120725 is 5270218133.

It can be written as a sum of positive squares in 6 ways, for example, as 130321 + 3317990404 = 361^2 + 57602^2 .

It is not a de Polignac number, because 3318120725 - 2² = 3318120721 is a prime.

It is a super-2 number, since 2×3318120725² = 22019850291349051250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3318120691 and 3318120700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3318120721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25802 + ... + 85451.

It is an arithmetic number, because the mean of its divisors is an integer number (343162963).

Almost surely, 2^3318120725 is an apocalyptic number.

It is an amenable number.

3318120725 is a deficient number, since it is larger than the sum of its proper divisors (799834831).

3318120725 is a wasteful number, since it uses less digits than its factorization.

3318120725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112456 (or 112451 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 3318120725 is about 57603.1312082946. The cubic root of 3318120725 is about 1491.5256545470.

Adding to 3318120725 its reverse (5270218133), we get a palindrome (8588338858).

The spelling of 3318120725 in words is "three billion, three hundred eighteen million, one hundred twenty thousand, seven hundred twenty-five".