255635140 has 48 divisors (see below), whose sum is σ = 548183664. Its totient is φ = 100108800.

The previous prime is 255635131. The next prime is 255635161. The reversal of 255635140 is 41536552.

It can be written as a sum of positive squares in 8 ways, for example, as 56430144 + 199204996 = 7512^2 + 14114^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386410 + ... + 387070.

It is an arithmetic number, because the mean of its divisors is an integer number (11420493).

Almost surely, 2^255635140 is an apocalyptic number.

255635140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255635140 is an abundant number, since it is smaller than the sum of its proper divisors (292548524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255635140 is a wasteful number, since it uses less digits than its factorization.

255635140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 1046 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 255635140 is about 15988.5940595163. The cubic root of 255635140 is about 634.6586215575.

It can be divided in two parts, 25563 and 5140, that added together give a palindrome (30703).

The spelling of 255635140 in words is "two hundred fifty-five million, six hundred thirty-five thousand, one hundred forty".