Search a number
BaseRepresentation
bin110011001100101111100101…
…101101111010010011101001
31002112021121212212210102021011
4303030233211231322103221
5214003241130214221121
62114524250241343521
765300302532233132
oct6314574555722351
91075247785712234
10225176104445161
11658257166a3011
1221308779937ba1
13988502819887c
143d8681dcdac89
151b07531d5b7e1
hexcccbe5b7a4e9

225176104445161 has 3 divisors (see below), whose sum is σ = 225176119451031. Its totient is φ = 225176089439292.

The previous prime is 225176104445153. The next prime is 225176104445167. The reversal of 225176104445161 is 161544401671522.

The square root of 225176104445161 is 15005869.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 208936010435161 + 16240094010000 = 14454619^2 + 4029900^2 .

It is not a de Polignac number, because 225176104445161 - 23 = 225176104445153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225176104445167) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7502935 + ... + 22508803.

It is an arithmetic number, because the mean of its divisors is an integer number (75058706483677).

Almost surely, 2225176104445161 is an apocalyptic number.

225176104445161 is the 15005869-th square number.

225176104445161 is the 7502935-th centered octagonal number.

It is an amenable number.

225176104445161 is a deficient number, since it is larger than the sum of its proper divisors (15005870).

225176104445161 is an frugal number, since it uses more digits than its factorization.

225176104445161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30011738 (or 15005869 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 225176104445161 in words is "two hundred twenty-five trillion, one hundred seventy-six billion, one hundred four million, four hundred forty-five thousand, one hundred sixty-one".

Divisors: 1 15005869 225176104445161