625621612 has 144 divisors (see below), whose sum is σ = 1453406976. Its totient is φ = 232848000.

The previous prime is 625621609. The next prime is 625621627. The reversal of 625621612 is 216126526.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8811537 + ... + 8811607.

It is an arithmetic number, because the mean of its divisors is an integer number (10093104).

Almost surely, 2^625621612 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 625621612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (726703488).

625621612 is an abundant number, since it is smaller than the sum of its proper divisors (827785364).

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

625621612 is a wasteful number, since it uses less digits than its factorization.

625621612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 219 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 625621612 is about 25012.4291503244. The cubic root of 625621612 is about 855.2713305036.

The spelling of 625621612 in words is "six hundred twenty-five million, six hundred twenty-one thousand, six hundred twelve".