628445425 has 12 divisors (see below), whose sum is σ = 820287280. Its totient is φ = 476295120.

The previous prime is 628445401. The next prime is 628445437. The reversal of 628445425 is 524544826.

628445425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 628445425 - 2¹³ = 628437233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 661047 + ... + 661996.

Almost surely, 2^628445425 is an apocalyptic number.

It is an amenable number.

628445425 is a deficient number, since it is larger than the sum of its proper divisors (191841855).

628445425 is a wasteful number, since it uses less digits than its factorization.

628445425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323072 (or 1323067 counting only the distinct ones).

The product of its digits is 307200, while the sum is 40.

The square root of 628445425 is about 25068.8137932372. The cubic root of 628445425 is about 856.5561868727.

The spelling of 628445425 in words is "six hundred twenty-eight million, four hundred forty-five thousand, four hundred twenty-five".