255405225 has 24 divisors (see below), whose sum is σ = 440632512. Its totient is φ = 130292800.

The previous prime is 255405211. The next prime is 255405253. The reversal of 255405225 is 522504552.

It is not a de Polignac number, because 255405225 - 2⁹ = 255404713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255405192 and 255405201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72306 + ... + 75755.

It is an arithmetic number, because the mean of its divisors is an integer number (18359688).

Almost surely, 2^255405225 is an apocalyptic number.

255405225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255405225 is a deficient number, since it is larger than the sum of its proper divisors (185227287).

255405225 is a wasteful number, since it uses less digits than its factorization.

255405225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148097 (or 148092 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 255405225 is about 15981.4024728745. The cubic root of 255405225 is about 634.4682965180.

Adding to 255405225 its reverse (522504552), we get a palindrome (777909777).

The spelling of 255405225 in words is "two hundred fifty-five million, four hundred five thousand, two hundred twenty-five".