66525383 has 2 divisors, whose sum is σ = 66525384. Its totient is φ = 66525382.

The previous prime is 66525359. The next prime is 66525401. The reversal of 66525383 is 38352566.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66525383 - 2¹⁴ = 66508999 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66525323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33262691 + 33262692.

It is an arithmetic number, because the mean of its divisors is an integer number (33262692).

Almost surely, 2^66525383 is an apocalyptic number.

66525383 is a deficient number, since it is larger than the sum of its proper divisors (1).

66525383 is an equidigital number, since it uses as much as digits as its factorization.

66525383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 38.

The square root of 66525383 is about 8156.3093982511. The cubic root of 66525383 is about 405.1934918544.

The spelling of 66525383 in words is "sixty-six million, five hundred twenty-five thousand, three hundred eighty-three".