194500013825 has 24 divisors (see below), whose sum is σ = 261600964800. Its totient is φ = 142597431360.

The previous prime is 194500013821. The next prime is 194500013831. The reversal of 194500013825 is 528310005491.

It is a happy number.

It is not a de Polignac number, because 194500013825 - 2² = 194500013821 is a prime.

It is a super-2 number, since 2×194500013825² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (194500013821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2107565 + ... + 2197914.

It is an arithmetic number, because the mean of its divisors is an integer number (10900040200).

Almost surely, 2^194500013825 is an apocalyptic number.

It is an amenable number.

194500013825 is a deficient number, since it is larger than the sum of its proper divisors (67100950975).

194500013825 is a wasteful number, since it uses less digits than its factorization.

194500013825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305641 (or 4305636 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 194500013825 in words is "one hundred ninety-four billion, five hundred million, thirteen thousand, eight hundred twenty-five".