2281865225 has 12 divisors (see below), whose sum is σ = 2857531020. Its totient is φ = 1807416000.

The previous prime is 2281865191. The next prime is 2281865231. The reversal of 2281865225 is 5225681822.

It can be written as a sum of positive squares in 6 ways, for example, as 246772681 + 2035092544 = 15709^2 + 45112^2 .

It is not a de Polignac number, because 2281865225 - 2¹² = 2281861129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 449330 + ... + 454379.

It is an arithmetic number, because the mean of its divisors is an integer number (238127585).

Almost surely, 2^2281865225 is an apocalyptic number.

2281865225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2281865225 is a deficient number, since it is larger than the sum of its proper divisors (575665795).

2281865225 is a wasteful number, since it uses less digits than its factorization.

2281865225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903820 (or 903815 counting only the distinct ones).

The product of its digits is 153600, while the sum is 41.

The square root of 2281865225 is about 47768.8729718422. The cubic root of 2281865225 is about 1316.5276861975.

The spelling of 2281865225 in words is "two billion, two hundred eighty-one million, eight hundred sixty-five thousand, two hundred twenty-five".