255545225 has 24 divisors (see below), whose sum is σ = 347061120. Its totient is φ = 185497920.

The previous prime is 255545221. The next prime is 255545261. The reversal of 255545225 is 522545552.

It is not a de Polignac number, because 255545225 - 2² = 255545221 is a prime.

It is a super-3 number, since 3×255545225³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (255545221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12512 + ... + 25838.

It is an arithmetic number, because the mean of its divisors is an integer number (14460880).

Almost surely, 2^255545225 is an apocalyptic number.

255545225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255545225 is a deficient number, since it is larger than the sum of its proper divisors (91515895).

255545225 is a wasteful number, since it uses less digits than its factorization.

255545225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13409 (or 13404 counting only the distinct ones).

The product of its digits is 100000, while the sum is 35.

The square root of 255545225 is about 15985.7819639829. The cubic root of 255545225 is about 634.5842029651.

The spelling of 255545225 in words is "two hundred fifty-five million, five hundred forty-five thousand, two hundred twenty-five".