255012140 has 24 divisors (see below), whose sum is σ = 550000752. Its totient is φ = 99247680.

The previous prime is 255012133. The next prime is 255012157. The reversal of 255012140 is 41210552.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171566 + ... + 173045.

It is an arithmetic number, because the mean of its divisors is an integer number (22916698).

Almost surely, 2^255012140 is an apocalyptic number.

255012140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255012140 is an abundant number, since it is smaller than the sum of its proper divisors (294988612).

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

255012140 is a wasteful number, since it uses less digits than its factorization.

255012140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344657 (or 344655 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 255012140 is about 15969.0995362920. The cubic root of 255012140 is about 634.1426336068.

Adding to 255012140 its reverse (41210552), we get a palindrome (296222692).

The spelling of 255012140 in words is "two hundred fifty-five million, twelve thousand, one hundred forty".