194144425 has 12 divisors (see below), whose sum is σ = 240944400. Its totient is φ = 155183120.

The previous prime is 194144417. The next prime is 194144429. The reversal of 194144425 is 524441491.

It is a happy number.

It is not a de Polignac number, because 194144425 - 2³ = 194144417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194144429) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 35526 + ... + 40624.

It is an arithmetic number, because the mean of its divisors is an integer number (20078700).

Almost surely, 2^194144425 is an apocalyptic number.

It is an amenable number.

194144425 is a deficient number, since it is larger than the sum of its proper divisors (46799975).

194144425 is a wasteful number, since it uses less digits than its factorization.

194144425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6632 (or 6627 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 194144425 is about 13933.5718679741. The cubic root of 194144425 is about 579.0396563152.

The spelling of 194144425 in words is "one hundred ninety-four million, one hundred forty-four thousand, four hundred twenty-five".