3081915225 has 27 divisors (see below), whose sum is σ = 5521544509. Its totient is φ = 1643244000.

The previous prime is 3081915217. The next prime is 3081915233. The reversal of 3081915225 is 5225191803.

The square root of 3081915225 is 55515.

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

It is an interprime number because it is at equal distance from previous prime (3081915217) and next prime (3081915233).

It can be written as a sum of positive squares in 4 ways, for example, as 173686041 + 2908229184 = 13179^2 + 53928^2 .

It is not a de Polignac number, because 3081915225 - 2³ = 3081915217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3081915225.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 830875 + ... + 834575.

Almost surely, 2^3081915225 is an apocalyptic number.

3081915225 is the 55515-th square number.

3081915225 is the 27758-th centered octagonal number.

It is an amenable number.

3081915225 is a deficient number, since it is larger than the sum of its proper divisors (2439629284).

3081915225 is an frugal number, since it uses more digits than its factorization.

3081915225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7418 (or 3709 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The cubic root of 3081915225 is about 1455.2587841683.

Multiplying 3081915225 by its sum of digits (36), we get a square (110948948100 = 333090²).

The spelling of 3081915225 in words is "three billion, eighty-one million, nine hundred fifteen thousand, two hundred twenty-five".