2555667225 has 18 divisors (see below), whose sum is σ = 4577484366. Its totient is φ = 1363022400.

The previous prime is 2555667217. The next prime is 2555667263. The reversal of 2555667225 is 5227665552.

2555667225 is a `hidden beast` number, since 2 + 5 + 556 + 6 + 72 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 773729856 + 1781937369 = 27816^2 + 42213^2 .

It is not a de Polignac number, because 2555667225 - 2³ = 2555667217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 5679036 + ... + 5679485.

It is an arithmetic number, because the mean of its divisors is an integer number (254304687).

Almost surely, 2^2555667225 is an apocalyptic number.

2555667225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2555667225 is a deficient number, since it is larger than the sum of its proper divisors (2021817141).

2555667225 is a wasteful number, since it uses less digits than its factorization.

2555667225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11358537 (or 11358529 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 45.

The square root of 2555667225 is about 50553.6074380454. The cubic root of 2555667225 is about 1367.2085568392.

The spelling of 2555667225 in words is "two billion, five hundred fifty-five million, six hundred sixty-seven thousand, two hundred twenty-five".