990610925 has 6 divisors (see below), whose sum is σ = 1228357578. Its totient is φ = 792488720.

The previous prime is 990610919. The next prime is 990610939. The reversal of 990610925 is 529016099.

It can be written as a sum of positive squares in 3 ways, for example, as 202236841 + 788374084 = 14221^2 + 28078^2 .

It is not a de Polignac number, because 990610925 - 2⁸ = 990610669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 19812194 + ... + 19812243.

It is an arithmetic number, because the mean of its divisors is an integer number (204726263).

Almost surely, 2^990610925 is an apocalyptic number.

It is an amenable number.

990610925 is a deficient number, since it is larger than the sum of its proper divisors (237746653).

990610925 is a wasteful number, since it uses less digits than its factorization.

990610925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39624447 (or 39624442 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 990610925 is about 31473.9721833772. The cubic root of 990610925 is about 996.8604619493.

The spelling of 990610925 in words is "nine hundred ninety million, six hundred ten thousand, nine hundred twenty-five".