625000000000 has 140 divisors (see below), whose sum is σ = 1560974120838. Its totient is φ = 250000000000.

The previous prime is 624999999991. The next prime is 625000000039. The reversal of 625000000000 is 526.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 7 ways, for example, as 159526750464 + 465473249536 = 399408^2 + 682256^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 124999999998 + ... + 125000000002.

Almost surely, 2^625000000000 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 625000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (780487060419).

625000000000 is an abundant number, since it is smaller than the sum of its proper divisors (935974120838).

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

625000000000 is an frugal number, since it uses more digits than its factorization.

625000000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

Adding to 625000000000 its reverse (526), we get a palindrome (625000000526).

The spelling of 625000000000 in words is "six hundred twenty-five billion", and thus it is an aban number.