66525250 has 64 divisors (see below), whose sum is σ = 143949312. Its totient is φ = 22752000.

The previous prime is 66525241. The next prime is 66525253. The reversal of 66525250 is 5252566.

66525250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66525253) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 46039 + ... + 47461.

It is an arithmetic number, because the mean of its divisors is an integer number (2249208).

Almost surely, 2^66525250 is an apocalyptic number.

66525250 is an abundant number, since it is smaller than the sum of its proper divisors (77424062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66525250 is a wasteful number, since it uses less digits than its factorization.

66525250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 66525250 is about 8156.3012450497. The cubic root of 66525250 is about 405.1932218283.

It can be divided in two parts, 6 and 6525250, that added together give a palindrome (6525256).

The spelling of 66525250 in words is "sixty-six million, five hundred twenty-five thousand, two hundred fifty".