625845140 has 48 divisors (see below), whose sum is σ = 1404672192. Its totient is φ = 233396736.

The previous prime is 625845131. The next prime is 625845151. The reversal of 625845140 is 41548526.

It is a self number, because there is not a number n which added to its sum of digits gives 625845140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27779 + ... + 44981.

It is an arithmetic number, because the mean of its divisors is an integer number (29264004).

Almost surely, 2^625845140 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 625845140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (702336096).

625845140 is an abundant number, since it is smaller than the sum of its proper divisors (778827052).

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

625845140 is a wasteful number, since it uses less digits than its factorization.

625845140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17336 (or 17334 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 625845140 is about 25016.8970897671. The cubic root of 625845140 is about 855.3731781818.

The spelling of 625845140 in words is "six hundred twenty-five million, eight hundred forty-five thousand, one hundred forty".