2981225 has 12 divisors (see below), whose sum is σ = 3981516. Its totient is φ = 2201280.

The previous prime is 2981221. The next prime is 2981243. The reversal of 2981225 is 5221892.

It can be written as a sum of positive squares in 6 ways, for example, as 1087849 + 1893376 = 1043^2 + 1376^2 .

It is not a de Polignac number, because 2981225 - 2² = 2981221 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2981221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4262 + ... + 4911.

It is an arithmetic number, because the mean of its divisors is an integer number (331793).

2^2981225 is an apocalyptic number.

2981225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2981225 is a deficient number, since it is larger than the sum of its proper divisors (1000291).

2981225 is a wasteful number, since it uses less digits than its factorization.

2981225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9196 (or 9191 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 2981225 is about 1726.6224254306. The cubic root of 2981225 is about 143.9234579072.

The spelling of 2981225 in words is "two million, nine hundred eighty-one thousand, two hundred twenty-five".