834172425 has 30 divisors (see below), whose sum is σ = 1545179438. Its totient is φ = 444890880.

The previous prime is 834172421. The next prime is 834172453. The reversal of 834172425 is 524271438.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8874441 + 825297984 = 2979^2 + 28728^2 .

It is not a de Polignac number, because 834172425 - 2² = 834172421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 834172425.

It is not an unprimeable number, because it can be changed into a prime (834172421) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 203944 + ... + 207993.

Almost surely, 2^834172425 is an apocalyptic number.

It is an amenable number.

834172425 is a deficient number, since it is larger than the sum of its proper divisors (711007013).

834172425 is a wasteful number, since it uses less digits than its factorization.

834172425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411959 (or 411945 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 834172425 is about 28882.0432968306. The cubic root of 834172425 is about 941.3517691267.

The spelling of 834172425 in words is "eight hundred thirty-four million, one hundred seventy-two thousand, four hundred twenty-five".