8434258425 has 36 divisors (see below), whose sum is σ = 15113854080. Its totient is φ = 4496139360.

The previous prime is 8434258421. The next prime is 8434258457. The reversal of 8434258425 is 5248524348.

8434258425 is a `hidden beast` number, since 8 + 4 + 3 + 42 + 584 + 25 = 666.

8434258425 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8434258425 - 2² = 8434258421 is a prime.

It is a super-2 number, since 2×8434258425² (a number of 21 digits) contains 22 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8434258421) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 542916 + ... + 558234.

It is an arithmetic number, because the mean of its divisors is an integer number (419829280).

Almost surely, 2^8434258425 is an apocalyptic number.

It is an amenable number.

8434258425 is a deficient number, since it is larger than the sum of its proper divisors (6679595655).

8434258425 is a wasteful number, since it uses less digits than its factorization.

8434258425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17782 (or 17774 counting only the distinct ones).

The product of its digits is 1228800, while the sum is 45.

The square root of 8434258425 is about 91838.2187599476. The cubic root of 8434258425 is about 2035.5524682878.

The spelling of 8434258425 in words is "eight billion, four hundred thirty-four million, two hundred fifty-eight thousand, four hundred twenty-five".