220425155 has 4 divisors (see below), whose sum is σ = 264510192. Its totient is φ = 176340120.

The previous prime is 220425151. The next prime is 220425187. The reversal of 220425155 is 551524022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 220425155 - 2² = 220425151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220425151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22042511 + ... + 22042520.

It is an arithmetic number, because the mean of its divisors is an integer number (66127548).

Almost surely, 2^220425155 is an apocalyptic number.

220425155 is a deficient number, since it is larger than the sum of its proper divisors (44085037).

220425155 is an equidigital number, since it uses as much as digits as its factorization.

220425155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44085036.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 220425155 is about 14846.7220287847. The cubic root of 220425155 is about 604.0696992429.

Adding to 220425155 its reverse (551524022), we get a palindrome (771949177).

The spelling of 220425155 in words is "two hundred twenty million, four hundred twenty-five thousand, one hundred fifty-five".