1000531012500 has 108 divisors (see below), whose sum is σ = 3161198100060. Its totient is φ = 266808240000.

The previous prime is 1000531012499. The next prime is 1000531012561. The reversal of 1000531012500 is 52101350001.

1000531012500 is a `hidden beast` number, since 10 + 0 + 0 + 53 + 101 + 2 + 500 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 969638028804 + 30892983696 = 984702^2 + 175764^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4334305 + ... + 4559304.

Almost surely, 2^{1000531012500} is an apocalyptic number.

1000531012500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000531012500 is an abundant number, since it is smaller than the sum of its proper divisors (2160667087560).

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

1000531012500 is an equidigital number, since it uses as much as digits as its factorization.

1000531012500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8893644 (or 8893619 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

Adding to 1000531012500 its reverse (52101350001), we get a palindrome (1052632362501).

The spelling of 1000531012500 in words is "one trillion, five hundred thirty-one million, twelve thousand, five hundred".