4000625000 has 128 divisors (see below), whose sum is σ = 9685522080. Its totient is φ = 1548000000.

The previous prime is 4000624997. The next prime is 4000625053. The reversal of 4000625000 is 5260004.

It can be written as a sum of positive squares in 16 ways, for example, as 3494464996 + 506160004 = 59114^2 + 22498^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4000625000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23124914 + ... + 23125086.

Almost surely, 2^4000625000 is an apocalyptic number.

4000625000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4000625000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4842761040).

4000625000 is an abundant number, since it is smaller than the sum of its proper divisors (5684897080).

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

4000625000 is an frugal number, since it uses more digits than its factorization.

4000625000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 4000625000 is about 63250.4940692166. The cubic root of 4000625000 is about 1587.4837248006.

Adding to 4000625000 its reverse (5260004), we get a palindrome (4005885004).

It can be divided in two parts, 4000 and 625000, that multiplied together give a square (2500000000 = 50000²).

The spelling of 4000625000 in words is "four billion, six hundred twenty-five thousand".