999525812 has 24 divisors (see below), whose sum is σ = 1932590016. Its totient is φ = 449913728.

The previous prime is 999525811. The next prime is 999525817. The reversal of 999525812 is 218525999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999525811) 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 7 ways as a sum of consecutive naturals, for example, 317978 + ... + 321105.

It is an arithmetic number, because the mean of its divisors is an integer number (80524584).

Almost surely, 2^999525812 is an apocalyptic number.

999525812 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

999525812 is a deficient number, since it is larger than the sum of its proper divisors (933064204).

999525812 is a wasteful number, since it uses less digits than its factorization.

999525812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639127 (or 639125 counting only the distinct ones).

The product of its digits is 583200, while the sum is 50.

The square root of 999525812 is about 31615.2781420629. The cubic root of 999525812 is about 999.8419123429.

The spelling of 999525812 in words is "nine hundred ninety-nine million, five hundred twenty-five thousand, eight hundred twelve".