628968225 has 24 divisors (see below), whose sum is σ = 1059521472. Its totient is φ = 329118400.

The previous prime is 628968203. The next prime is 628968247. The reversal of 628968225 is 522869826.

628968225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (628968203) and next prime (628968247).

It is not a de Polignac number, because 628968225 - 2¹⁰ = 628967201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75141 + ... + 83090.

It is an arithmetic number, because the mean of its divisors is an integer number (44146728).

Almost surely, 2^628968225 is an apocalyptic number.

It is an amenable number.

628968225 is a deficient number, since it is larger than the sum of its proper divisors (430553247).

628968225 is a wasteful number, since it uses less digits than its factorization.

628968225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158297 (or 158292 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 628968225 is about 25079.2389238589. The cubic root of 628968225 is about 856.7936423662.

The spelling of 628968225 in words is "six hundred twenty-eight million, nine hundred sixty-eight thousand, two hundred twenty-five".