628081825 has 24 divisors (see below), whose sum is σ = 891425088. Its totient is φ = 430034880.

The previous prime is 628081807. The next prime is 628081849. The reversal of 628081825 is 528180826.

It is a happy number.

628081825 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 628081825 - 2¹⁷ = 627950753 is a prime.

It is a Duffinian number.

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, 132954 + ... + 137596.

It is an arithmetic number, because the mean of its divisors is an integer number (37142712).

Almost surely, 2^628081825 is an apocalyptic number.

It is an amenable number.

628081825 is a deficient number, since it is larger than the sum of its proper divisors (263343263).

628081825 is a wasteful number, since it uses less digits than its factorization.

628081825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5433 (or 5428 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 628081825 is about 25061.5607055905. The cubic root of 628081825 is about 856.3909622827.

Subtracting from 628081825 its reverse (528180826), we obtain a palindrome (99900999).

The spelling of 628081825 in words is "six hundred twenty-eight million, eighty-one thousand, eight hundred twenty-five".