625540000 has 60 divisors (see below), whose sum is σ = 1538971434. Its totient is φ = 250208000.

The previous prime is 625539989. The next prime is 625540031. The reversal of 625540000 is 45526.

It can be written as a sum of positive squares in 5 ways, for example, as 13868176 + 611671824 = 3724^2 + 24732^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4362 + ... + 35638.

Almost surely, 2^625540000 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 625540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769485717).

625540000 is an abundant number, since it is smaller than the sum of its proper divisors (913431434).

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

625540000 is an equidigital number, since it uses as much as digits as its factorization.

625540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31307 (or 31284 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 625540000 is about 25010.7976682072. The cubic root of 625540000 is about 855.2341389926.

Adding to 625540000 its reverse (45526), we get a palindrome (625585526).

The spelling of 625540000 in words is "six hundred twenty-five million, five hundred forty thousand".