66492925 has 6 divisors (see below), whose sum is σ = 82451258. Its totient is φ = 53194320.

The previous prime is 66492901. The next prime is 66492947. The reversal of 66492925 is 52929466.

It can be written as a sum of positive squares in 3 ways, for example, as 509796 + 65983129 = 714^2 + 8123^2 .

It is not a de Polignac number, because 66492925 - 2¹⁷ = 66361853 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 (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1329834 + ... + 1329883.

Almost surely, 2^66492925 is an apocalyptic number.

It is an amenable number.

66492925 is a deficient number, since it is larger than the sum of its proper divisors (15958333).

66492925 is a wasteful number, since it uses less digits than its factorization.

66492925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659727 (or 2659722 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The square root of 66492925 is about 8154.3194075287. The cubic root of 66492925 is about 405.1275826266.

The spelling of 66492925 in words is "sixty-six million, four hundred ninety-two thousand, nine hundred twenty-five".