194174888662225 has 27 divisors (see below), whose sum is σ = 251702653156059. Its totient is φ = 148584775508400.

The previous prime is 194174888662213. The next prime is 194174888662343. The reversal of 194174888662225 is 522266888471491.

The square root of 194174888662225 is 13934665.

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

It can be written as a sum of positive squares in only one way, i.e., 69902959918401 + 124271928743824 = 8360799^2 + 11147732^2 .

It is not a de Polignac number, because 194174888662225 - 2⁹ = 194174888661713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1602425890 + ... + 1602547060.

Almost surely, 2^{194174888662225} is an apocalyptic number.

194174888662225 is the 13934665-th square number.

194174888662225 is the 6967333-rd centered octagonal number.

It is an amenable number.

194174888662225 is a deficient number, since it is larger than the sum of its proper divisors (57527764493834).

194174888662225 is an frugal number, since it uses more digits than its factorization.

194174888662225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242398 (or 121199 counting only the distinct ones).

The product of its digits is 743178240, while the sum is 73.

The spelling of 194174888662225 in words is "one hundred ninety-four trillion, one hundred seventy-four billion, eight hundred eighty-eight million, six hundred sixty-two thousand, two hundred twenty-five".