220116625 has 16 divisors (see below), whose sum is σ = 275500368. Its totient is φ = 175584000.

The previous prime is 220116623. The next prime is 220116643. The reversal of 220116625 is 526611022.

It can be written as a sum of positive squares in 8 ways, for example, as 62789776 + 157326849 = 7924^2 + 12543^2 .

It is not a de Polignac number, because 220116625 - 2¹ = 220116623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220116625.

It is not an unprimeable number, because it can be changed into a prime (220116623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44265 + ... + 48985.

It is an arithmetic number, because the mean of its divisors is an integer number (17218773).

Almost surely, 2^220116625 is an apocalyptic number.

220116625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220116625 is a deficient number, since it is larger than the sum of its proper divisors (55383743).

220116625 is an equidigital number, since it uses as much as digits as its factorization.

220116625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109 (or 5099 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 220116625 is about 14836.3278812515. The cubic root of 220116625 is about 603.7877280254.

Adding to 220116625 its reverse (526611022), we get a palindrome (746727647).

The spelling of 220116625 in words is "two hundred twenty million, one hundred sixteen thousand, six hundred twenty-five".