1669740325 has 12 divisors (see below), whose sum is σ = 2258703648. Its totient is φ = 1214356400.

The previous prime is 1669740307. The next prime is 1669740367. The reversal of 1669740325 is 5230479661.

It is not a de Polignac number, because 1669740325 - 2¹³ = 1669732133 is a prime.

It is a super-2 number, since 2×1669740325² = 5576065505862211250, which contains 22 as substring.

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, 3035617 + ... + 3036166.

It is an arithmetic number, because the mean of its divisors is an integer number (188225304).

Almost surely, 2^1669740325 is an apocalyptic number.

It is an amenable number.

1669740325 is a deficient number, since it is larger than the sum of its proper divisors (588963323).

1669740325 is a wasteful number, since it uses less digits than its factorization.

1669740325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071804 (or 6071799 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 1669740325 is about 40862.4561792362. The cubic root of 1669740325 is about 1186.3594988942.

The spelling of 1669740325 in words is "one billion, six hundred sixty-nine million, seven hundred forty thousand, three hundred twenty-five".