220255418 has 4 divisors (see below), whose sum is σ = 330383130. Its totient is φ = 110127708.

The previous prime is 220255393. The next prime is 220255421. The reversal of 220255418 is 814552022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 814552022 = 2 ⋅407276011.

It can be written as a sum of positive squares in only one way, i.e., 208715809 + 11539609 = 14447^2 + 3397^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55063853 + ... + 55063856.

Almost surely, 2^220255418 is an apocalyptic number.

220255418 is a deficient number, since it is larger than the sum of its proper divisors (110127712).

220255418 is a wasteful number, since it uses less digits than its factorization.

220255418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110127711.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 220255418 is about 14841.0046155912. The cubic root of 220255418 is about 603.9146060729.

The spelling of 220255418 in words is "two hundred twenty million, two hundred fifty-five thousand, four hundred eighteen".