255521325 has 24 divisors (see below), whose sum is σ = 422928288. Its totient is φ = 136127680.

The previous prime is 255521311. The next prime is 255521327. The reversal of 255521325 is 523125552.

It is not a de Polignac number, because 255521325 - 2⁴ = 255521309 is a prime.

It is a super-2 number, since 2×255521325² = 130582295059511250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255521292 and 255521301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255521327) 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, 113107 + ... + 115343.

It is an arithmetic number, because the mean of its divisors is an integer number (17622012).

Almost surely, 2^255521325 is an apocalyptic number.

255521325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255521325 is a deficient number, since it is larger than the sum of its proper divisors (167406963).

255521325 is a wasteful number, since it uses less digits than its factorization.

255521325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773 (or 3768 counting only the distinct ones).

The product of its digits is 15000, while the sum is 30.

The square root of 255521325 is about 15985.0344072198. The cubic root of 255521325 is about 634.5644190759.

Adding to 255521325 its reverse (523125552), we get a palindrome (778646877).

The spelling of 255521325 in words is "two hundred fifty-five million, five hundred twenty-one thousand, three hundred twenty-five".