625633 has 6 divisors (see below), whose sum is σ = 644406. Its totient is φ = 607392.

The previous prime is 625631. The next prime is 625637. The reversal of 625633 is 336526.

625633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 471969 + 153664 = 687^2 + 392^2 .

It is not a de Polignac number, because 625633 - 2¹ = 625631 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 2⁹ + 6⁵ + 5⁷ + 3 + 3¹² .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 625598 and 625607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1141 + ... + 1597.

It is an arithmetic number, because the mean of its divisors is an integer number (107401).

2⁶²⁵⁶³³ is an apocalyptic number.

625633 is the 457-th octagonal number.

It is an amenable number.

625633 is a deficient number, since it is larger than the sum of its proper divisors (18773).

625633 is an equidigital number, since it uses as much as digits as its factorization.

625633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 494 counting only the distinct ones).

The product of its digits is 3240, while the sum is 25.

The square root of 625633 is about 790.9696580780. The cubic root of 625633 is about 85.5276519887.

The spelling of 625633 in words is "six hundred twenty-five thousand, six hundred thirty-three".