1667143325 has 12 divisors (see below), whose sum is σ = 2115334848. Its totient is φ = 1302697200.

The previous prime is 1667143307. The next prime is 1667143333. The reversal of 1667143325 is 5233417661.

It is not a de Polignac number, because 1667143325 - 2⁸ = 1667143069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 774341 + ... + 776490.

It is an arithmetic number, because the mean of its divisors is an integer number (176277904).

Almost surely, 2^1667143325 is an apocalyptic number.

It is an amenable number.

1667143325 is a deficient number, since it is larger than the sum of its proper divisors (448191523).

1667143325 is a wasteful number, since it uses less digits than its factorization.

1667143325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550884 (or 1550879 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 1667143325 is about 40830.6664775387. Note that the first 3 decimals coincide. The cubic root of 1667143325 is about 1185.7441189122.

The spelling of 1667143325 in words is "one billion, six hundred sixty-seven million, one hundred forty-three thousand, three hundred twenty-five".