2555555225 has 6 divisors (see below), whose sum is σ = 3168888510. Its totient is φ = 2044444160.

The previous prime is 2555555221. The next prime is 2555555251. The reversal of 2555555225 is 5225555552.

It can be written as a sum of positive squares in 3 ways, for example, as 89340304 + 2466214921 = 9452^2 + 49661^2 .

It is not a de Polignac number, because 2555555225 - 2² = 2555555221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2555555221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51111080 + ... + 51111129.

It is an arithmetic number, because the mean of its divisors is an integer number (528148085).

Almost surely, 2^2555555225 is an apocalyptic number.

2555555225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2555555225 is a deficient number, since it is larger than the sum of its proper divisors (613333285).

2555555225 is a wasteful number, since it uses less digits than its factorization.

2555555225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102222219 (or 102222214 counting only the distinct ones).

The product of its digits is 625000, while the sum is 41.

The square root of 2555555225 is about 50552.4996909154. The cubic root of 2555555225 is about 1367.1885842865.

The spelling of 2555555225 in words is "two billion, five hundred fifty-five million, five hundred fifty-five thousand, two hundred twenty-five".