194378125 has 12 divisors (see below), whose sum is σ = 242961012. Its totient is φ = 155500000.

The previous prime is 194378101. The next prime is 194378137. The reversal of 194378125 is 521873491.

It can be written as a sum of positive squares in 6 ways, for example, as 187936681 + 6441444 = 13709^2 + 2538^2 .

It is a de Polignac number, because none of the positive numbers 2^k-194378125 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27976 + ... + 34225.

It is an arithmetic number, because the mean of its divisors is an integer number (20246751).

Almost surely, 2^194378125 is an apocalyptic number.

It is an amenable number.

194378125 is a deficient number, since it is larger than the sum of its proper divisors (48582887).

194378125 is an frugal number, since it uses more digits than its factorization.

194378125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62226 (or 62206 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 194378125 is about 13941.9555658451. The cubic root of 194378125 is about 579.2719014707.

The spelling of 194378125 in words is "one hundred ninety-four million, three hundred seventy-eight thousand, one hundred twenty-five".