255640125 has 64 divisors (see below), whose sum is σ = 469647360. Its totient is φ = 122688000.

The previous prime is 255640111. The next prime is 255640127. The reversal of 255640125 is 521046552.

It is not a de Polignac number, because 255640125 - 2⁴ = 255640109 is a prime.

It is a super-3 number, since 3×255640125³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255640092 and 255640101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255640127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 199236 + ... + 200514.

It is an arithmetic number, because the mean of its divisors is an integer number (7338240).

Almost surely, 2^255640125 is an apocalyptic number.

255640125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255640125 is a deficient number, since it is larger than the sum of its proper divisors (214007235).

255640125 is a wasteful number, since it uses less digits than its factorization.

255640125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351 (or 1341 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 255640125 is about 15988.7499511375. The cubic root of 255640125 is about 634.6627469067.

Adding to 255640125 its reverse (521046552), we get a palindrome (776686677).

The spelling of 255640125 in words is "two hundred fifty-five million, six hundred forty thousand, one hundred twenty-five".