194252605 has 4 divisors (see below), whose sum is σ = 233103132. Its totient is φ = 155402080.

The previous prime is 194252573. The next prime is 194252623. The reversal of 194252605 is 506252491.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 130028409 + 64224196 = 11403^2 + 8014^2 .

It is not a de Polignac number, because 194252605 - 2⁵ = 194252573 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 3 ways as a sum of consecutive naturals, for example, 19425256 + ... + 19425265.

It is an arithmetic number, because the mean of its divisors is an integer number (58275783).

Almost surely, 2^194252605 is an apocalyptic number.

It is an amenable number.

194252605 is a deficient number, since it is larger than the sum of its proper divisors (38850527).

194252605 is an equidigital number, since it uses as much as digits as its factorization.

194252605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38850526.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 194252605 is about 13937.4533183075. The cubic root of 194252605 is about 579.1471860213.

The spelling of 194252605 in words is "one hundred ninety-four million, two hundred fifty-two thousand, six hundred five".