669300025 has 12 divisors (see below), whose sum is σ = 839259900. Its totient is φ = 529422080.

The previous prime is 669300011. The next prime is 669300029. The reversal of 669300025 is 520003966.

It can be written as a sum of positive squares in 6 ways, for example, as 94864 + 669205161 = 308^2 + 25869^2 .

It is not a de Polignac number, because 669300025 - 2¹¹ = 669297977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 669300025.

It is not an unprimeable number, because it can be changed into a prime (669300029) 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 11 ways as a sum of consecutive naturals, for example, 148180 + ... + 152629.

It is an arithmetic number, because the mean of its divisors is an integer number (69938325).

Almost surely, 2^669300025 is an apocalyptic number.

It is an amenable number.

669300025 is a deficient number, since it is larger than the sum of its proper divisors (169959875).

669300025 is a wasteful number, since it uses less digits than its factorization.

669300025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300908 (or 300903 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 669300025 is about 25870.8334809685. The cubic root of 669300025 is about 874.7291787718.

The spelling of 669300025 in words is "six hundred sixty-nine million, three hundred thousand, twenty-five".