66425301 has 6 divisors (see below), whose sum is σ = 95947670. Its totient is φ = 44283528.

The previous prime is 66425299. The next prime is 66425321. The reversal of 66425301 is 10352466.

It can be written as a sum of positive squares in only one way, i.e., 58890276 + 7535025 = 7674^2 + 2745^2 .

It is not a de Polignac number, because 66425301 - 2¹ = 66425299 is a prime.

It is a super-2 number, since 2×66425301² = 8824641225881202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66425321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3690286 + ... + 3690303.

Almost surely, 2^66425301 is an apocalyptic number.

It is an amenable number.

66425301 is a deficient number, since it is larger than the sum of its proper divisors (29522369).

66425301 is a wasteful number, since it uses less digits than its factorization.

66425301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7380595 (or 7380592 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 66425301 is about 8150.1718386792. The cubic root of 66425301 is about 404.9901963791.

Adding to 66425301 its reverse (10352466), we get a palindrome (76777767).

The spelling of 66425301 in words is "sixty-six million, four hundred twenty-five thousand, three hundred one".