996591625 has 8 divisors (see below), whose sum is σ = 1243746504. Its totient is φ = 797273200.

The previous prime is 996591623. The next prime is 996591637. The reversal of 996591625 is 526195699.

It can be written as a sum of positive squares in 4 ways, for example, as 20466576 + 976125049 = 4524^2 + 31243^2 .

It is not a de Polignac number, because 996591625 - 2¹ = 996591623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (996591623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3986242 + ... + 3986491.

It is an arithmetic number, because the mean of its divisors is an integer number (155468313).

Almost surely, 2^996591625 is an apocalyptic number.

It is an amenable number.

996591625 is a deficient number, since it is larger than the sum of its proper divisors (247154879).

996591625 is an equidigital number, since it uses as much as digits as its factorization.

996591625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7972748 (or 7972738 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 52.

The square root of 996591625 is about 31568.8394623559. The cubic root of 996591625 is about 998.8625817703.

The spelling of 996591625 in words is "nine hundred ninety-six million, five hundred ninety-one thousand, six hundred twenty-five".