628338525 has 12 divisors (see below), whose sum is σ = 1038853152. Its totient is φ = 335113840.

The previous prime is 628338523. The next prime is 628338559. The reversal of 628338525 is 525833826.

It is not a de Polignac number, because 628338525 - 2¹ = 628338523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628338523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4188849 + ... + 4188998.

It is an arithmetic number, because the mean of its divisors is an integer number (86571096).

Almost surely, 2^628338525 is an apocalyptic number.

It is an amenable number.

628338525 is a deficient number, since it is larger than the sum of its proper divisors (410514627).

628338525 is a wasteful number, since it uses less digits than its factorization.

628338525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8377860 (or 8377855 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 628338525 is about 25066.6815713608. The cubic root of 628338525 is about 856.5076167317.

The spelling of 628338525 in words is "six hundred twenty-eight million, three hundred thirty-eight thousand, five hundred twenty-five".