1634223656225 has 24 divisors (see below), whose sum is σ = 2081316009720. Its totient is φ = 1271977067520.

The previous prime is 1634223656209. The next prime is 1634223656231. The reversal of 1634223656225 is 5226563224361.

It can be written as a sum of positive squares in 12 ways, for example, as 673635487009 + 960588169216 = 820753^2 + 980096^2 .

It is not a de Polignac number, because 1634223656225 - 2⁴ = 1634223656209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1634223656225.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24302249 + ... + 24369401.

It is an arithmetic number, because the mean of its divisors is an integer number (86721500405).

Almost surely, 2^{1634223656225} is an apocalyptic number.

It is an amenable number.

1634223656225 is a deficient number, since it is larger than the sum of its proper divisors (447092353495).

1634223656225 is a wasteful number, since it uses less digits than its factorization.

1634223656225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93509 (or 93504 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 47.

The spelling of 1634223656225 in words is "one trillion, six hundred thirty-four billion, two hundred twenty-three million, six hundred fifty-six thousand, two hundred twenty-five".