625546866 has 32 divisors (see below), whose sum is σ = 1430581248. Its totient is φ = 178632720.

The previous prime is 625546819. The next prime is 625546891. The reversal of 625546866 is 668645526.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127071 + ... + 131901.

It is an arithmetic number, because the mean of its divisors is an integer number (44705664).

Almost surely, 2^625546866 is an apocalyptic number.

625546866 is an abundant number, since it is smaller than the sum of its proper divisors (805034382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

625546866 is a wasteful number, since it uses less digits than its factorization.

625546866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7926.

The product of its digits is 2073600, while the sum is 48.

The square root of 625546866 is about 25010.9349285468. The cubic root of 625546866 is about 855.2372680310.

The spelling of 625546866 in words is "six hundred twenty-five million, five hundred forty-six thousand, eight hundred sixty-six".