1066643125 has 10 divisors (see below), whose sum is σ = 1332878030. Its totient is φ = 853314000.

The previous prime is 1066643111. The next prime is 1066643143. The reversal of 1066643125 is 5213466601.

It can be written as a sum of positive squares in 5 ways, for example, as 798797169 + 267845956 = 28263^2 + 16366^2 .

It is not a de Polignac number, because 1066643125 - 2⁵ = 1066643093 is a prime.

It is a super-2 number, since 2×1066643125² = 2275455112219531250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 852690 + ... + 853939.

It is an arithmetic number, because the mean of its divisors is an integer number (133287803).

Almost surely, 2^1066643125 is an apocalyptic number.

It is an amenable number.

1066643125 is a deficient number, since it is larger than the sum of its proper divisors (266234905).

1066643125 is an frugal number, since it uses more digits than its factorization.

1066643125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706649 (or 1706634 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1066643125 is about 32659.5028284265. The cubic root of 1066643125 is about 1021.7383930523.

The spelling of 1066643125 in words is "one billion, sixty-six million, six hundred forty-three thousand, one hundred twenty-five".