1000625000 has 64 divisors (see below), whose sum is σ = 2346673680. Its totient is φ = 400000000.

The previous prime is 1000624993. The next prime is 1000625027. The reversal of 1000625000 is 5260001.

1000625000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 627903364 + 372721636 = 25058^2 + 19306^2 .

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, 624200 + ... + 625800.

Almost surely, 2^1000625000 is an apocalyptic number.

1000625000 is a gapful number since it is divisible by the number (10) 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 1000625000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1173336840).

1000625000 is an abundant number, since it is smaller than the sum of its proper divisors (1346048680).

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

1000625000 is an frugal number, since it uses more digits than its factorization.

1000625000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642 (or 1608 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1000625000 is about 31632.6571757733. The cubic root of 1000625000 is about 1000.2082899456.

Adding to 1000625000 its reverse (5260001), we get a palindrome (1005885001).

It can be divided in two parts, 1000 and 625000, that multiplied together give a square (625000000 = 25000²).

The spelling of 1000625000 in words is "one billion, six hundred twenty-five thousand".