628549818625 has 16 divisors (see below), whose sum is σ = 786002256000. Its totient is φ = 501832110000.

The previous prime is 628549818593. The next prime is 628549818629. The reversal of 628549818625 is 526818945826.

It is not a de Polignac number, because 628549818625 - 2⁵ = 628549818593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628549818629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4976101 + ... + 5100850.

It is an arithmetic number, because the mean of its divisors is an integer number (49125141000).

Almost surely, 2^628549818625 is an apocalyptic number.

It is an amenable number.

628549818625 is a deficient number, since it is larger than the sum of its proper divisors (157452437375).

628549818625 is a wasteful number, since it uses less digits than its factorization.

628549818625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10077465 (or 10077455 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 64.

The spelling of 628549818625 in words is "six hundred twenty-eight billion, five hundred forty-nine million, eight hundred eighteen thousand, six hundred twenty-five".