194200625 has 10 divisors (see below), whose sum is σ = 242673882. Its totient is φ = 155360000.

The previous prime is 194200621. The next prime is 194200649. The reversal of 194200625 is 526002491.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 84621601 + 109579024 = 9199^2 + 10468^2 .

It is not a de Polignac number, because 194200625 - 2² = 194200621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194200621) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 154736 + ... + 155985.

Almost surely, 2^194200625 is an apocalyptic number.

It is an amenable number.

194200625 is a deficient number, since it is larger than the sum of its proper divisors (48473257).

194200625 is an frugal number, since it uses more digits than its factorization.

194200625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310741 (or 310726 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 194200625 is about 13935.5884339342. The cubic root of 194200625 is about 579.0955234687.

The spelling of 194200625 in words is "one hundred ninety-four million, two hundred thousand, six hundred twenty-five".