255643025 has 48 divisors (see below), whose sum is σ = 369619200. Its totient is φ = 173337600.

The previous prime is 255643021. The next prime is 255643039. The reversal of 255643025 is 520346552.

It is not a de Polignac number, because 255643025 - 2² = 255643021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 255642982 and 255643000.

It is not an unprimeable number, because it can be changed into a prime (255643021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 696392 + ... + 696758.

It is an arithmetic number, because the mean of its divisors is an integer number (7700400).

Almost surely, 2^255643025 is an apocalyptic number.

255643025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255643025 is a deficient number, since it is larger than the sum of its proper divisors (113976175).

255643025 is a wasteful number, since it uses less digits than its factorization.

255643025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 255643025 is about 15988.8406396461. The cubic root of 255643025 is about 634.6651467842.

Adding to 255643025 its reverse (520346552), we get a palindrome (775989577).

The spelling of 255643025 in words is "two hundred fifty-five million, six hundred forty-three thousand, twenty-five".