255932778 has 16 divisors (see below), whose sum is σ = 512038656. Its totient is φ = 85282080.

The previous prime is 255932771. The next prime is 255932779. The reversal of 255932778 is 877239552.

It is a happy number.

255932778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (255932771) 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, 19783 + ... + 30053.

It is an arithmetic number, because the mean of its divisors is an integer number (32002416).

Almost surely, 2^255932778 is an apocalyptic number.

255932778 is an abundant number, since it is smaller than the sum of its proper divisors (256105878).

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

255932778 is a wasteful number, since it uses less digits than its factorization.

255932778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14429.

The product of its digits is 1058400, while the sum is 48.

The square root of 255932778 is about 15997.8991745791. The cubic root of 255932778 is about 634.9048386962.

The spelling of 255932778 in words is "two hundred fifty-five million, nine hundred thirty-two thousand, seven hundred seventy-eight".