194078125 has 14 divisors (see below), whose sum is σ = 242614082. Its totient is φ = 155250000.

The previous prime is 194078099. The next prime is 194078161. The reversal of 194078125 is 521870491.

It can be written as a sum of positive squares in 7 ways, for example, as 180284329 + 13793796 = 13427^2 + 3714^2 .

It is a de Polignac number, because none of the positive numbers 2^k-194078125 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 9415 + ... + 21835.

Almost surely, 2^194078125 is an apocalyptic number.

It is an amenable number.

194078125 is a deficient number, since it is larger than the sum of its proper divisors (48535957).

194078125 is an frugal number, since it uses more digits than its factorization.

194078125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12451 (or 12426 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 194078125 is about 13931.1925189483. The cubic root of 194078125 is about 578.9737351157.

The spelling of 194078125 in words is "one hundred ninety-four million, seventy-eight thousand, one hundred twenty-five".