634425 has 24 divisors (see below), whose sum is σ = 1145760. Its totient is φ = 307200.

The previous prime is 634421. The next prime is 634441. The reversal of 634425 is 524436.

It is not a de Polignac number, because 634425 - 2² = 634421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 634395 and 634404.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 634425.

It is not an unprimeable number, because it can be changed into a prime (634421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 441 + ... + 1209.

It is an arithmetic number, because the mean of its divisors is an integer number (47740).

2⁶³⁴⁴²⁵ is an apocalyptic number.

It is an amenable number.

634425 is a deficient number, since it is larger than the sum of its proper divisors (511335).

634425 is a wasteful number, since it uses less digits than its factorization.

634425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 788 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 634425 is about 796.5080037263. The cubic root of 634425 is about 85.9264288768.

The spelling of 634425 in words is "six hundred thirty-four thousand, four hundred twenty-five".