1066650125 has 16 divisors (see below), whose sum is σ = 1409486832. Its totient is φ = 803123200.

The previous prime is 1066650119. The next prime is 1066650127. The reversal of 1066650125 is 5210566601.

It can be written as a sum of positive squares in 8 ways, for example, as 37908649 + 1028741476 = 6157^2 + 32074^2 .

It is not a de Polignac number, because 1066650125 - 2⁸ = 1066649869 is a prime.

It is a super-2 number, since 2×1066650125² = 2275484978325031250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1066650091 and 1066650100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066650127) 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 15 ways as a sum of consecutive naturals, for example, 248852 + ... + 253101.

It is an arithmetic number, because the mean of its divisors is an integer number (88092927).

Almost surely, 2^1066650125 is an apocalyptic number.

It is an amenable number.

1066650125 is a deficient number, since it is larger than the sum of its proper divisors (342836707).

1066650125 is an equidigital number, since it uses as much as digits as its factorization.

1066650125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501985 (or 501975 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1066650125 is about 32659.6099946095. The cubic root of 1066650125 is about 1021.7406281494.

The spelling of 1066650125 in words is "one billion, sixty-six million, six hundred fifty thousand, one hundred twenty-five".