628125312566 has 16 divisors (see below), whose sum is σ = 999793771056. Its totient is φ = 294941573376.

The previous prime is 628125312559. The next prime is 628125312569. The reversal of 628125312566 is 665213521826.

It is a super-2 number, since 2×628125312566² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 628125312566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628125312569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20197016 + ... + 20228091.

It is an arithmetic number, because the mean of its divisors is an integer number (62487110691).

Almost surely, 2^628125312566 is an apocalyptic number.

628125312566 is a deficient number, since it is larger than the sum of its proper divisors (371668458490).

628125312566 is a wasteful number, since it uses less digits than its factorization.

628125312566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40425583.

The product of its digits is 1036800, while the sum is 47.

The spelling of 628125312566 in words is "six hundred twenty-eight billion, one hundred twenty-five million, three hundred twelve thousand, five hundred sixty-six".