625563 has 10 divisors (see below), whose sum is σ = 934604. Its totient is φ = 416988.

The previous prime is 625543. The next prime is 625589. The reversal of 625563 is 365526.

It is not a de Polignac number, because 625563 - 2⁸ = 625307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (625543) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 3781 + ... + 3942.

2⁶²⁵⁵⁶³ is an apocalyptic number.

625563 is a deficient number, since it is larger than the sum of its proper divisors (309041).

625563 is an equidigital number, since it uses as much as digits as its factorization.

625563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7735 (or 7726 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 625563 is about 790.9254073552. The cubic root of 625563 is about 85.5244620680.

It can be divided in two parts, 62 and 5563, that added together give a square (5625 = 75²).

The spelling of 625563 in words is "six hundred twenty-five thousand, five hundred sixty-three".