628695625 has 10 divisors (see below), whose sum is σ = 785618834. Its totient is φ = 502956000.

The previous prime is 628695619. The next prime is 628695629. The reversal of 628695625 is 526596826.

It can be written as a sum of positive squares in 5 ways, for example, as 236021769 + 392673856 = 15363^2 + 19816^2 .

It is a de Polignac number, because none of the positive numbers 2^k-628695625 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628695629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 502332 + ... + 503581.

Almost surely, 2^628695625 is an apocalyptic number.

It is an amenable number.

628695625 is a deficient number, since it is larger than the sum of its proper divisors (156923209).

628695625 is an equidigital number, since it uses as much as digits as its factorization.

628695625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005933 (or 1005918 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

The square root of 628695625 is about 25073.8035606886. The cubic root of 628695625 is about 856.6698440097.

The spelling of 628695625 in words is "six hundred twenty-eight million, six hundred ninety-five thousand, six hundred twenty-five".