634340425 has 6 divisors (see below), whose sum is σ = 786582158. Its totient is φ = 507472320.

The previous prime is 634340419. The next prime is 634340453. The reversal of 634340425 is 524043436.

It can be written as a sum of positive squares in 3 ways, for example, as 215032896 + 419307529 = 14664^2 + 20477^2 .

It is not a de Polignac number, because 634340425 - 2¹¹ = 634338377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12686784 + ... + 12686833.

Almost surely, 2^634340425 is an apocalyptic number.

It is an amenable number.

634340425 is a deficient number, since it is larger than the sum of its proper divisors (152241733).

634340425 is a wasteful number, since it uses less digits than its factorization.

634340425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25373627 (or 25373622 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 634340425 is about 25186.1157187844. The cubic root of 634340425 is about 859.2261043195.

The spelling of 634340425 in words is "six hundred thirty-four million, three hundred forty thousand, four hundred twenty-five".