625826464 has 24 divisors (see below), whose sum is σ = 1233175860. Its totient is φ = 312638976.

The previous prime is 625826459. The next prime is 625826471. The reversal of 625826464 is 464628526.

It can be written as a sum of positive squares in 2 ways, for example, as 479610000 + 146216464 = 21900^2 + 12092^2 .

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 625826464.

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 3 ways as a sum of consecutive naturals, for example, 31372 + ... + 47284.

Almost surely, 2^625826464 is an apocalyptic number.

It is an amenable number.

625826464 is a deficient number, since it is larger than the sum of its proper divisors (607349396).

625826464 is a wasteful number, since it uses less digits than its factorization.

625826464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17152 (or 17144 counting only the distinct ones).

The product of its digits is 552960, while the sum is 43.

The square root of 625826464 is about 25016.5238192679. The cubic root of 625826464 is about 855.3646696295.

The spelling of 625826464 in words is "six hundred twenty-five million, eight hundred twenty-six thousand, four hundred sixty-four".