194169425 has 6 divisors (see below), whose sum is σ = 240770118. Its totient is φ = 155335520.

The previous prime is 194169419. The next prime is 194169433. The reversal of 194169425 is 524961491.

It can be written as a sum of positive squares in 3 ways, for example, as 625681 + 193543744 = 791^2 + 13912^2 .

It is not a de Polignac number, because 194169425 - 2²⁰ = 193120849 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 (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3883364 + ... + 3883413.

It is an arithmetic number, because the mean of its divisors is an integer number (40128353).

Almost surely, 2^194169425 is an apocalyptic number.

It is an amenable number.

194169425 is a deficient number, since it is larger than the sum of its proper divisors (46600693).

194169425 is an equidigital number, since it uses as much as digits as its factorization.

194169425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7766787 (or 7766782 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 194169425 is about 13934.4689529239. The cubic root of 194169425 is about 579.0645095829.

The spelling of 194169425 in words is "one hundred ninety-four million, one hundred sixty-nine thousand, four hundred twenty-five".