625680 has 120 divisors (see below), whose sum is σ = 2321280. Its totient is φ = 149760.

The previous prime is 625663. The next prime is 625697. The reversal of 625680 is 86526.

It is a Cunningham number, because it is equal to 791²-1.

It is an interprime number because it is at equal distance from previous prime (625663) and next prime (625697).

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7881 + ... + 7959.

It is an arithmetic number, because the mean of its divisors is an integer number (19344).

2⁶²⁵⁶⁸⁰ is an apocalyptic number.

625680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1160640).

625680 is an abundant number, since it is smaller than the sum of its proper divisors (1695600).

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

625680 is a wasteful number, since it uses less digits than its factorization.

625680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 625680 is about 790.9993678885. Note that the first 3 decimals coincide. The cubic root of 625680 is about 85.5297936591.

It can be divided in two parts, 6256 and 80, that added together give a palindrome (6336).

The spelling of 625680 in words is "six hundred twenty-five thousand, six hundred eighty".