220684025 has 12 divisors (see below), whose sum is σ = 273960144. Its totient is φ = 176346000.

The previous prime is 220684007. The next prime is 220684039. The reversal of 220684025 is 520486022.

It is not a de Polignac number, because 220684025 - 2⁸ = 220683769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19730 + ... + 28820.

It is an arithmetic number, because the mean of its divisors is an integer number (22830012).

Almost surely, 2^220684025 is an apocalyptic number.

220684025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220684025 is a deficient number, since it is larger than the sum of its proper divisors (53276119).

220684025 is an equidigital number, since it uses as much as digits as its factorization.

220684025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10072 (or 10067 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 220684025 is about 14855.4375566659. The cubic root of 220684025 is about 604.3060823461.

The spelling of 220684025 in words is "two hundred twenty million, six hundred eighty-four thousand, twenty-five".