66525194 has 16 divisors (see below), whose sum is σ = 108430080. Its totient is φ = 30494880.

The previous prime is 66525161. The next prime is 66525203. The reversal of 66525194 is 49152566.

66525194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27059 + ... + 29414.

It is an arithmetic number, because the mean of its divisors is an integer number (6776880).

Almost surely, 2^66525194 is an apocalyptic number.

66525194 is a deficient number, since it is larger than the sum of its proper divisors (41904886).

66525194 is a wasteful number, since it uses less digits than its factorization.

66525194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56525.

The product of its digits is 64800, while the sum is 38.

The square root of 66525194 is about 8156.2978121204. The cubic root of 66525194 is about 405.1931081330.

The spelling of 66525194 in words is "sixty-six million, five hundred twenty-five thousand, one hundred ninety-four".