220115425 has 6 divisors (see below), whose sum is σ = 272943158. Its totient is φ = 176092320.

The previous prime is 220115383. The next prime is 220115443. The reversal of 220115425 is 524511022.

It can be written as a sum of positive squares in 3 ways, for example, as 69488896 + 150626529 = 8336^2 + 12273^2 .

It is not a de Polignac number, because 220115425 - 2¹³ = 220107233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220115396 and 220115405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4402284 + ... + 4402333.

Almost surely, 2^220115425 is an apocalyptic number.

220115425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220115425 is a deficient number, since it is larger than the sum of its proper divisors (52827733).

220115425 is an equidigital number, since it uses as much as digits as its factorization.

220115425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8804627 (or 8804622 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 220115425 is about 14836.2874399224. The cubic root of 220115425 is about 603.7866308092.

Adding to 220115425 its reverse (524511022), we get a palindrome (744626447).

The spelling of 220115425 in words is "two hundred twenty million, one hundred fifteen thousand, four hundred twenty-five".