194931725 has 24 divisors (see below), whose sum is σ = 251338080. Its totient is φ = 149843520.

The previous prime is 194931703. The next prime is 194931727. The reversal of 194931725 is 527139491.

It is not a de Polignac number, because 194931725 - 2¹⁴ = 194915341 is a prime.

It is a super-2 number, since 2×194931725² = 75996754822951250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194931727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75506 + ... + 78044.

It is an arithmetic number, because the mean of its divisors is an integer number (10472420).

Almost surely, 2^194931725 is an apocalyptic number.

It is an amenable number.

194931725 is a deficient number, since it is larger than the sum of its proper divisors (56406355).

194931725 is a wasteful number, since it uses less digits than its factorization.

194931725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669 (or 2664 counting only the distinct ones).

The product of its digits is 68040, while the sum is 41.

The square root of 194931725 is about 13961.7951925961. The cubic root of 194931725 is about 579.8213133664.

The spelling of 194931725 in words is "one hundred ninety-four million, nine hundred thirty-one thousand, seven hundred twenty-five".