66025426 has 8 divisors (see below), whose sum is σ = 99082620. Its totient is φ = 32997888.

The previous prime is 66025411. The next prime is 66025429. The reversal of 66025426 is 62452066.

It can be written as a sum of positive squares in 2 ways, for example, as 66015625 + 9801 = 8125^2 + 99^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66025429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591 + ... + 11506.

Almost surely, 2^66025426 is an apocalyptic number.

66025426 is a deficient number, since it is larger than the sum of its proper divisors (33057194).

66025426 is a wasteful number, since it uses less digits than its factorization.

66025426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14828.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 66025426 is about 8125.6031160770. The cubic root of 66025426 is about 404.1758906363.

The spelling of 66025426 in words is "sixty-six million, twenty-five thousand, four hundred twenty-six".