996121925 has 6 divisors (see below), whose sum is σ = 1235191218. Its totient is φ = 796897520.

The previous prime is 996121921. The next prime is 996121939. The reversal of 996121925 is 529121699.

It can be written as a sum of positive squares in 3 ways, for example, as 64224196 + 931897729 = 8014^2 + 30527^2 .

It is not a de Polignac number, because 996121925 - 2² = 996121921 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 (996121921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19922414 + ... + 19922463.

It is an arithmetic number, because the mean of its divisors is an integer number (205865203).

Almost surely, 2^996121925 is an apocalyptic number.

It is an amenable number.

996121925 is a deficient number, since it is larger than the sum of its proper divisors (239069293).

996121925 is a wasteful number, since it uses less digits than its factorization.

996121925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39844887 (or 39844882 counting only the distinct ones).

The product of its digits is 87480, while the sum is 44.

The square root of 996121925 is about 31561.3992877375. The cubic root of 996121925 is about 998.7056336720.

The spelling of 996121925 in words is "nine hundred ninety-six million, one hundred twenty-one thousand, nine hundred twenty-five".