625660 has 48 divisors (see below), whose sum is σ = 1552320. Its totient is φ = 207360.

The previous prime is 625657. The next prime is 625661. The reversal of 625660 is 66526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5686 + ... + 5794.

It is an arithmetic number, because the mean of its divisors is an integer number (32340).

2⁶²⁵⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776160).

625660 is an abundant number, since it is smaller than the sum of its proper divisors (926660).

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

625660 is a wasteful number, since it uses less digits than its factorization.

625660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 625660 is about 790.9867255523. The cubic root of 625660 is about 85.5288823231.

The spelling of 625660 in words is "six hundred twenty-five thousand, six hundred sixty".