628565225 has 48 divisors (see below), whose sum is σ = 848195712. Its totient is φ = 460354560.

The previous prime is 628565153. The next prime is 628565233. The reversal of 628565225 is 522565826.

It is not a de Polignac number, because 628565225 - 2¹⁴ = 628548841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3633239 + ... + 3633411.

It is an arithmetic number, because the mean of its divisors is an integer number (17670744).

Almost surely, 2^628565225 is an apocalyptic number.

It is an amenable number.

628565225 is a deficient number, since it is larger than the sum of its proper divisors (219630487).

628565225 is a wasteful number, since it uses less digits than its factorization.

628565225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 381 counting only the distinct ones).

The product of its digits is 288000, while the sum is 41.

The square root of 628565225 is about 25071.2031023643. The cubic root of 628565225 is about 856.6106115993.

The spelling of 628565225 in words is "six hundred twenty-eight million, five hundred sixty-five thousand, two hundred twenty-five".