1665010925 has 12 divisors (see below), whose sum is σ = 2067350196. Its totient is φ = 1330243200.

The previous prime is 1665010913. The next prime is 1665010931. The reversal of 1665010925 is 5290105661.

It can be written as a sum of positive squares in 6 ways, for example, as 814588681 + 850422244 = 28541^2 + 29162^2 .

It is not a de Polignac number, because 1665010925 - 2⁴ = 1665010909 is a prime.

It is a super-2 number, since 2×1665010925² = 5544522760738711250, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 24734 + ... + 62783.

It is an arithmetic number, because the mean of its divisors is an integer number (172279183).

Almost surely, 2^1665010925 is an apocalyptic number.

It is an amenable number.

1665010925 is a deficient number, since it is larger than the sum of its proper divisors (402339271).

1665010925 is an equidigital number, since it uses as much as digits as its factorization.

1665010925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88288 (or 88283 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 1665010925 is about 40804.5453963158. The cubic root of 1665010925 is about 1185.2383516463.

The spelling of 1665010925 in words is "one billion, six hundred sixty-five million, ten thousand, nine hundred twenty-five".