255209812 has 72 divisors (see below), whose sum is σ = 540546048. Its totient is φ = 104681280.

The previous prime is 255209809. The next prime is 255209821. The reversal of 255209812 is 218902552.

It is a happy number.

255209812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295293 + ... + 296155.

It is an arithmetic number, because the mean of its divisors is an integer number (7507584).

Almost surely, 2^255209812 is an apocalyptic number.

255209812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

255209812 is an abundant number, since it is smaller than the sum of its proper divisors (285336236).

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

255209812 is a wasteful number, since it uses less digits than its factorization.

255209812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 255209812 is about 15975.2875404482. The cubic root of 255209812 is about 634.3064426288.

The spelling of 255209812 in words is "two hundred fifty-five million, two hundred nine thousand, eight hundred twelve".