220556425 has 24 divisors (see below), whose sum is σ = 282919392. Its totient is φ = 170448000.

The previous prime is 220556423. The next prime is 220556467. The reversal of 220556425 is 524655022.

It is a happy number.

It is not a de Polignac number, because 220556425 - 2¹ = 220556423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220556423) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 108670 + ... + 110680.

It is an arithmetic number, because the mean of its divisors is an integer number (11788308).

Almost surely, 2^220556425 is an apocalyptic number.

220556425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220556425 is a deficient number, since it is larger than the sum of its proper divisors (62362967).

220556425 is a wasteful number, since it uses less digits than its factorization.

220556425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169 (or 2164 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 220556425 is about 14851.1422119647. The cubic root of 220556425 is about 604.1895895121.

The spelling of 220556425 in words is "two hundred twenty million, five hundred fifty-six thousand, four hundred twenty-five".