1000625020 has 12 divisors (see below), whose sum is σ = 2101312584. Its totient is φ = 400250000.

The previous prime is 1000624993. The next prime is 1000625027. The reversal of 1000625020 is 205260001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1000624985 and 1000625003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000625027) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 25015606 + ... + 25015645.

It is an arithmetic number, because the mean of its divisors is an integer number (175109382).

Almost surely, 2^1000625020 is an apocalyptic number.

1000625020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000625020 is an abundant number, since it is smaller than the sum of its proper divisors (1100687564).

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

1000625020 is a wasteful number, since it uses less digits than its factorization.

1000625020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50031260 (or 50031258 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1000625020 is about 31632.6574919023. The cubic root of 1000625020 is about 1000.2082966095.

Adding to 1000625020 its reverse (205260001), we get a palindrome (1205885021).

The spelling of 1000625020 in words is "one billion, six hundred twenty-five thousand, twenty".