634788025 has 9 divisors (see below), whose sum is σ = 787293391. Its totient is φ = 507729640.

The previous prime is 634788019. The next prime is 634788029. The reversal of 634788025 is 520887436.

The square root of 634788025 is 25195.

It is a perfect power (a square), and thus also a powerful number.

634788025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 228523689 + 406264336 = 15117^2 + 20156^2 .

It is not a de Polignac number, because 634788025 - 2⁷ = 634787897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634788029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 123456 + ... + 128494.

Almost surely, 2^634788025 is an apocalyptic number.

634788025 is the 25195-th square number.

634788025 is the 12598-th centered octagonal number.

It is an amenable number.

634788025 is a deficient number, since it is larger than the sum of its proper divisors (152505366).

634788025 is an frugal number, since it uses more digits than its factorization.

634788025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10088 (or 5044 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The cubic root of 634788025 is about 859.4281510267.

The spelling of 634788025 in words is "six hundred thirty-four million, seven hundred eighty-eight thousand, twenty-five".