220155225625 has 20 divisors (see below), whose sum is σ = 277776982912. Its totient is φ = 174414186000.

The previous prime is 220155225617. The next prime is 220155225637. The reversal of 220155225625 is 526522551022.

It is not a de Polignac number, because 220155225625 - 2³ = 220155225617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1645569 + ... + 1774318.

Almost surely, 2^220155225625 is an apocalyptic number.

220155225625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220155225625 is a deficient number, since it is larger than the sum of its proper divisors (57621757287).

220155225625 is an equidigital number, since it uses as much as digits as its factorization.

220155225625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420010 (or 3419995 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 220155225625 its reverse (526522551022), we get a palindrome (746677776647).

The spelling of 220155225625 in words is "two hundred twenty billion, one hundred fifty-five million, two hundred twenty-five thousand, six hundred twenty-five".