194004828225 has 72 divisors (see below), whose sum is σ = 375596154752. Its totient is φ = 95157244800.

The previous prime is 194004828211. The next prime is 194004828233. The reversal of 194004828225 is 522828400491.

194004828225 is a `hidden beast` number, since 1 + 94 + 0 + 0 + 482 + 82 + 2 + 5 = 666.

It is not a de Polignac number, because 194004828225 - 2⁴ = 194004828209 is a prime.

It is a super-2 number, since 2×194004828225² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 670302 + ... + 915048.

Almost surely, 2^194004828225 is an apocalyptic number.

194004828225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194004828225 is a deficient number, since it is larger than the sum of its proper divisors (181591326527).

194004828225 is a wasteful number, since it uses less digits than its factorization.

194004828225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245047 (or 245039 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 194004828225 in words is "one hundred ninety-four billion, four million, eight hundred twenty-eight thousand, two hundred twenty-five".