625626 has 12 divisors (see below), whose sum is σ = 1355562. Its totient is φ = 208536.

The previous prime is 625621. The next prime is 625627. The reversal of 625626 is 626526.

It can be written as a sum of positive squares in only one way, i.e., 585225 + 40401 = 765^2 + 201^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 625626.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 625626.

It is not an unprimeable number, because it can be changed into a prime (625621) by changing a digit.

625626 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17361 + ... + 17396.

2⁶²⁵⁶²⁶ is an apocalyptic number.

625626 is an abundant number, since it is smaller than the sum of its proper divisors (729936).

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

625626 is a wasteful number, since it uses less digits than its factorization.

625626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34765 (or 34762 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 625626 is about 790.9652331171. The cubic root of 625626 is about 85.5273330073.

Subtracting 625626 from its reverse (626526), we obtain a square (900 = 30²).

The spelling of 625626 in words is "six hundred twenty-five thousand, six hundred twenty-six".