625530 has 32 divisors (see below), whose sum is σ = 1555200. Its totient is φ = 160832.

The previous prime is 625529. The next prime is 625543. The reversal of 625530 is 35526.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 625497 and 625506.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 625530.

It is an unprimeable 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 15 ways as a sum of consecutive naturals, for example, 511 + ... + 1229.

It is an arithmetic number, because the mean of its divisors is an integer number (48600).

2⁶²⁵⁵³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (777600).

625530 is an abundant number, since it is smaller than the sum of its proper divisors (929670).

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

625530 is a wasteful number, since it uses less digits than its factorization.

625530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 625530 is about 790.9045454415. The cubic root of 625530 is about 85.5229581657.

The spelling of 625530 in words is "six hundred twenty-five thousand, five hundred thirty".