625778328 has 64 divisors (see below), whose sum is σ = 1790588160. Its totient is φ = 178528896.

The previous prime is 625778317. The next prime is 625778371. The reversal of 625778328 is 823877526.

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, 129850 + ... + 134582.

It is an arithmetic number, because the mean of its divisors is an integer number (27977940).

Almost surely, 2^625778328 is an apocalyptic number.

It is an amenable number.

625778328 is an abundant number, since it is smaller than the sum of its proper divisors (1164809832).

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

625778328 is a wasteful number, since it uses less digits than its factorization.

625778328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5536 (or 5532 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 48.

The square root of 625778328 is about 25015.5617166595. The cubic root of 625778328 is about 855.3427386887.

The spelling of 625778328 in words is "six hundred twenty-five million, seven hundred seventy-eight thousand, three hundred twenty-eight".