194251925 has 18 divisors (see below), whose sum is σ = 280200258. Its totient is φ = 133200480.

The previous prime is 194251913. The next prime is 194251931. The reversal of 194251925 is 529152491.

It can be written as a sum of positive squares in 3 ways, for example, as 63904036 + 130347889 = 7994^2 + 11417^2 .

It is not a de Polignac number, because 194251925 - 2¹⁸ = 193989781 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 17 ways as a sum of consecutive naturals, for example, 78062 + ... + 80511.

It is an arithmetic number, because the mean of its divisors is an integer number (15566681).

Almost surely, 2^194251925 is an apocalyptic number.

It is an amenable number.

194251925 is a deficient number, since it is larger than the sum of its proper divisors (85948333).

194251925 is a wasteful number, since it uses less digits than its factorization.

194251925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158597 (or 158585 counting only the distinct ones).

The product of its digits is 32400, while the sum is 38.

The square root of 194251925 is about 13937.4289235856. The cubic root of 194251925 is about 579.1465102337.

The spelling of 194251925 in words is "one hundred ninety-four million, two hundred fifty-one thousand, nine hundred twenty-five".