255765166 has 16 divisors (see below), whose sum is σ = 385978320. Its totient is φ = 127108800.

The previous prime is 255765157. The next prime is 255765179. The reversal of 255765166 is 661567552.

It is a congruent number.

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, 425266 + ... + 425866.

It is an arithmetic number, because the mean of its divisors is an integer number (24123645).

Almost surely, 2^255765166 is an apocalyptic number.

255765166 is a deficient number, since it is larger than the sum of its proper divisors (130213154).

255765166 is a wasteful number, since it uses less digits than its factorization.

255765166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539.

The product of its digits is 378000, while the sum is 43.

The square root of 255765166 is about 15992.6597537745. The cubic root of 255765166 is about 634.7662073593.

The spelling of 255765166 in words is "two hundred fifty-five million, seven hundred sixty-five thousand, one hundred sixty-six".