634725 has 72 divisors (see below), whose sum is σ = 1444352. Its totient is φ = 259200.

The previous prime is 634717. The next prime is 634727. The reversal of 634725 is 527436.

It is a happy number.

634725 is a `hidden beast` number, since 634 + 7 + 25 = 666.

It is not a de Polignac number, because 634725 - 2³ = 634717 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 6⁵ + 3¹² + 7⁵ + 4³ + 2⁹ + 5⁷ .

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634727) 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, 20460 + ... + 20490.

2⁶³⁴⁷²⁵ is an apocalyptic number.

634725 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

634725 is an abundant number, since it is smaller than the sum of its proper divisors (809627).

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

634725 is a wasteful number, since it uses less digits than its factorization.

634725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 59 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 634725 is about 796.6963034934. The cubic root of 634725 is about 85.9399707279.

The spelling of 634725 in words is "six hundred thirty-four thousand, seven hundred twenty-five".