66525134 has 16 divisors (see below), whose sum is σ = 108419472. Its totient is φ = 30430848.

The previous prime is 66525133. The next prime is 66525143. The reversal of 66525134 is 43152566.

It is a self number, because there is not a number n which added to its sum of digits gives 66525134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66525133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8384 + ... + 14259.

It is an arithmetic number, because the mean of its divisors is an integer number (6776217).

Almost surely, 2^66525134 is an apocalyptic number.

66525134 is a deficient number, since it is larger than the sum of its proper divisors (41894338).

66525134 is a wasteful number, since it uses less digits than its factorization.

66525134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22771.

The product of its digits is 21600, while the sum is 32.

The square root of 66525134 is about 8156.2941339802. The cubic root of 66525134 is about 405.1929863165.

The spelling of 66525134 in words is "sixty-six million, five hundred twenty-five thousand, one hundred thirty-four".