255670155 has 32 divisors (see below), whose sum is σ = 489491520. Its totient is φ = 125867520.

The previous prime is 255670141. The next prime is 255670223. The reversal of 255670155 is 551076552.

It is a happy number.

It is not a de Polignac number, because 255670155 - 2⁶ = 255670091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71086 + ... + 74595.

It is an arithmetic number, because the mean of its divisors is an integer number (15296610).

Almost surely, 2^255670155 is an apocalyptic number.

255670155 is a deficient number, since it is larger than the sum of its proper divisors (233821365).

255670155 is a wasteful number, since it uses less digits than its factorization.

255670155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145708 (or 145702 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The square root of 255670155 is about 15989.6890213662. The cubic root of 255670155 is about 634.6875971736.

The spelling of 255670155 in words is "two hundred fifty-five million, six hundred seventy thousand, one hundred fifty-five".