669750325 has 6 divisors (see below), whose sum is σ = 830490434. Its totient is φ = 535800240.

The previous prime is 669750311. The next prime is 669750353. The reversal of 669750325 is 523057966.

669750325 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 187772209 + 481978116 = 13703^2 + 21954^2 .

It is not a de Polignac number, because 669750325 - 2⁷ = 669750197 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 13394982 + ... + 13395031.

Almost surely, 2^669750325 is an apocalyptic number.

It is an amenable number.

669750325 is a deficient number, since it is larger than the sum of its proper divisors (160740109).

669750325 is a wasteful number, since it uses less digits than its factorization.

669750325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26790023 (or 26790018 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 43.

The square root of 669750325 is about 25879.5348683086. The cubic root of 669750325 is about 874.9253051884.

The spelling of 669750325 in words is "six hundred sixty-nine million, seven hundred fifty thousand, three hundred twenty-five".