999373525 has 6 divisors (see below), whose sum is σ = 1239223202. Its totient is φ = 799498800.

The previous prime is 999373523. The next prime is 999373547. The reversal of 999373525 is 525373999.

It can be written as a sum of positive squares in 3 ways, for example, as 160807761 + 838565764 = 12681^2 + 28958^2 .

It is not a de Polignac number, because 999373525 - 2¹ = 999373523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999373523) 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 5 ways as a sum of consecutive naturals, for example, 19987446 + ... + 19987495.

Almost surely, 2^999373525 is an apocalyptic number.

It is an amenable number.

999373525 is a deficient number, since it is larger than the sum of its proper divisors (239849677).

999373525 is a wasteful number, since it uses less digits than its factorization.

999373525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39974951 (or 39974946 counting only the distinct ones).

The product of its digits is 2296350, while the sum is 52.

The square root of 999373525 is about 31612.8696103343. The cubic root of 999373525 is about 999.7911313769.

The spelling of 999373525 in words is "nine hundred ninety-nine million, three hundred seventy-three thousand, five hundred twenty-five".