255223520155 has 16 divisors (see below), whose sum is σ = 307428955200. Its totient is φ = 203405332480.

The previous prime is 255223520137. The next prime is 255223520179. The reversal of 255223520155 is 551025322552.

It is not a de Polignac number, because 255223520155 - 2⁹ = 255223519643 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6892731 + ... + 6929659.

It is an arithmetic number, because the mean of its divisors is an integer number (19214309700).

Almost surely, 2^255223520155 is an apocalyptic number.

255223520155 is a deficient number, since it is larger than the sum of its proper divisors (52205435045).

255223520155 is a wasteful number, since it uses less digits than its factorization.

255223520155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42134.

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 255223520155 in words is "two hundred fifty-five billion, two hundred twenty-three million, five hundred twenty thousand, one hundred fifty-five".