255649798 has 12 divisors (see below), whose sum is σ = 394123212. Its totient is φ = 124368840.

The previous prime is 255649787. The next prime is 255649813. The reversal of 255649798 is 897946552.

255649798 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 5 ways as a sum of consecutive naturals, for example, 43948 + ... + 49423.

It is an arithmetic number, because the mean of its divisors is an integer number (32843601).

Almost surely, 2^255649798 is an apocalyptic number.

255649798 is a deficient number, since it is larger than the sum of its proper divisors (138473414).

255649798 is an equidigital number, since it uses as much as digits as its factorization.

255649798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93447 (or 93410 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 55.

The square root of 255649798 is about 15989.0524422181. The cubic root of 255649798 is about 634.6707516690.

The spelling of 255649798 in words is "two hundred fifty-five million, six hundred forty-nine thousand, seven hundred ninety-eight".