999932725 has 12 divisors (see below), whose sum is σ = 1352636640. Its totient is φ = 727223600.

The previous prime is 999932701. The next prime is 999932729. The reversal of 999932725 is 527239999.

It is not a de Polignac number, because 999932725 - 2⁵ = 999932693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999932729) 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 11 ways as a sum of consecutive naturals, for example, 1817785 + ... + 1818334.

It is an arithmetic number, because the mean of its divisors is an integer number (112719720).

Almost surely, 2^999932725 is an apocalyptic number.

It is an amenable number.

999932725 is a deficient number, since it is larger than the sum of its proper divisors (352703915).

999932725 is a wasteful number, since it uses less digits than its factorization.

999932725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3636140 (or 3636135 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 55.

The square root of 999932725 is about 31621.7128726450. The cubic root of 999932725 is about 999.9775744971.

It can be divided in two parts, 9999 and 32725, that added together give a palindrome (42724).

The spelling of 999932725 in words is "nine hundred ninety-nine million, nine hundred thirty-two thousand, seven hundred twenty-five".