66525267 has 16 divisors (see below), whose sum is σ = 94666752. Its totient is φ = 41408640.

The previous prime is 66525253. The next prime is 66525293. The reversal of 66525267 is 76252566.

It is not a de Polignac number, because 66525267 - 2⁶ = 66525203 is a prime.

It is a super-2 number, since 2×66525267² = 8851222298842578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66525227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1342 + ... + 11612.

It is an arithmetic number, because the mean of its divisors is an integer number (5916672).

Almost surely, 2^66525267 is an apocalyptic number.

66525267 is a deficient number, since it is larger than the sum of its proper divisors (28141485).

66525267 is a wasteful number, since it uses less digits than its factorization.

66525267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10418.

The product of its digits is 151200, while the sum is 39.

The square root of 66525267 is about 8156.3022871887. The cubic root of 66525267 is about 405.1932563429.

The spelling of 66525267 in words is "sixty-six million, five hundred twenty-five thousand, two hundred sixty-seven".