194981725 has 24 divisors (see below), whose sum is σ = 249671520. Its totient is φ = 150976320.

The previous prime is 194981711. The next prime is 194981771. The reversal of 194981725 is 527189491.

It is not a de Polignac number, because 194981725 - 2¹³ = 194973533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97839 + ... + 99811.

It is an arithmetic number, because the mean of its divisors is an integer number (10402980).

Almost surely, 2^194981725 is an apocalyptic number.

It is an amenable number.

194981725 is a deficient number, since it is larger than the sum of its proper divisors (54689795).

194981725 is a wasteful number, since it uses less digits than its factorization.

194981725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109 (or 2104 counting only the distinct ones).

The product of its digits is 181440, while the sum is 46.

The square root of 194981725 is about 13963.5856784710. The cubic root of 194981725 is about 579.8708838631.

The spelling of 194981725 in words is "one hundred ninety-four million, nine hundred eighty-one thousand, seven hundred twenty-five".