66525122 has 16 divisors (see below), whose sum is σ = 101582880. Its totient is φ = 32669568.

The previous prime is 66525113. The next prime is 66525133. The reversal of 66525122 is 22152566.

It is a super-2 number, since 2×66525122² = 8851183714229768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25733 + ... + 28199.

It is an arithmetic number, because the mean of its divisors is an integer number (6348930).

Almost surely, 2^66525122 is an apocalyptic number.

66525122 is a deficient number, since it is larger than the sum of its proper divisors (35057758).

66525122 is a wasteful number, since it uses less digits than its factorization.

66525122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705.

The product of its digits is 7200, while the sum is 29.

The square root of 66525122 is about 8156.2933983520. The cubic root of 66525122 is about 405.1929619532.

Adding to 66525122 its reverse (22152566), we get a palindrome (88677688).

The spelling of 66525122 in words is "sixty-six million, five hundred twenty-five thousand, one hundred twenty-two".