66125627 has 4 divisors (see below), whose sum is σ = 66180576. Its totient is φ = 66070680.

The previous prime is 66125603. The next prime is 66125639. The reversal of 66125627 is 72652166.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72652166 = 2 ⋅36326083.

It is a cyclic number.

It is not a de Polignac number, because 66125627 - 2¹⁰ = 66124603 is a prime.

It is a super-2 number, since 2×66125627² = 8745197092286258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66125687) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 25628 + ... + 28089.

It is an arithmetic number, because the mean of its divisors is an integer number (16545144).

Almost surely, 2^66125627 is an apocalyptic number.

66125627 is a deficient number, since it is larger than the sum of its proper divisors (54949).

66125627 is a wasteful number, since it uses less digits than its factorization.

66125627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54948.

The product of its digits is 30240, while the sum is 35.

The square root of 66125627 is about 8131.7665362454. The cubic root of 66125627 is about 404.3802480632.

The spelling of 66125627 in words is "sixty-six million, one hundred twenty-five thousand, six hundred twenty-seven".