8394691725 has 72 divisors (see below), whose sum is σ = 17243396352. Its totient is φ = 3824265600.

The previous prime is 8394691703. The next prime is 8394691729. The reversal of 8394691725 is 5271964938.

8394691725 is a `hidden beast` number, since 8 + 3 + 9 + 469 + 172 + 5 = 666.

It is not a de Polignac number, because 8394691725 - 2⁵ = 8394691693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8394691729) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 452380 + ... + 470570.

It is an arithmetic number, because the mean of its divisors is an integer number (239491616).

Almost surely, 2^8394691725 is an apocalyptic number.

It is an amenable number.

8394691725 is an abundant number, since it is smaller than the sum of its proper divisors (8848704627).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8394691725 is a wasteful number, since it uses less digits than its factorization.

8394691725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18507 (or 18499 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 8394691725 is about 91622.5503083166. The cubic root of 8394691725 is about 2032.3644240845.

The spelling of 8394691725 in words is "eight billion, three hundred ninety-four million, six hundred ninety-one thousand, seven hundred twenty-five".