255242125 has 8 divisors (see below), whose sum is σ = 318542328. Its totient is φ = 204193600.

The previous prime is 255242123. The next prime is 255242129. The reversal of 255242125 is 521242552.

It can be written as a sum of positive squares in 4 ways, for example, as 2368521 + 252873604 = 1539^2 + 15902^2 .

It is not a de Polignac number, because 255242125 - 2¹ = 255242123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255242093 and 255242102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255242123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020844 + ... + 1021093.

It is an arithmetic number, because the mean of its divisors is an integer number (39817791).

Almost surely, 2^255242125 is an apocalyptic number.

255242125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255242125 is a deficient number, since it is larger than the sum of its proper divisors (63300203).

255242125 is an equidigital number, since it uses as much as digits as its factorization.

255242125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041952 (or 2041942 counting only the distinct ones).

The product of its digits is 8000, while the sum is 28.

The square root of 255242125 is about 15976.2988517366. The cubic root of 255242125 is about 634.3332120791. Note that the first 3 decimals are identical.

Adding to 255242125 its reverse (521242552), we get a palindrome (776484677).

The spelling of 255242125 in words is "two hundred fifty-five million, two hundred forty-two thousand, one hundred twenty-five".