220825881655 has 8 divisors (see below), whose sum is σ = 265117921200. Its totient is φ = 176576129856.

The previous prime is 220825881581. The next prime is 220825881667. The reversal of 220825881655 is 556188528022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220825881655 - 2¹⁹ = 220825357367 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10560445 + ... + 10581334.

It is an arithmetic number, because the mean of its divisors is an integer number (33139740150).

Almost surely, 2^220825881655 is an apocalyptic number.

220825881655 is a deficient number, since it is larger than the sum of its proper divisors (44292039545).

220825881655 is a wasteful number, since it uses less digits than its factorization.

220825881655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21143873.

The product of its (nonzero) digits is 3072000, while the sum is 52.

The spelling of 220825881655 in words is "two hundred twenty billion, eight hundred twenty-five million, eight hundred eighty-one thousand, six hundred fifty-five".