105666425 has 6 divisors (see below), whose sum is σ = 131026398. Its totient is φ = 84533120.

The previous prime is 105666403. The next prime is 105666433. The reversal of 105666425 is 524666501.

It can be written as a sum of positive squares in 3 ways, for example, as 5125696 + 100540729 = 2264^2 + 10027^2 .

It is not a de Polignac number, because 105666425 - 2²² = 101472121 is a prime.

It is a super-2 number, since 2×105666425² = 22330786744561250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2113304 + ... + 2113353.

It is an arithmetic number, because the mean of its divisors is an integer number (21837733).

Almost surely, 2^105666425 is an apocalyptic number.

It is an amenable number.

105666425 is a deficient number, since it is larger than the sum of its proper divisors (25359973).

105666425 is an equidigital number, since it uses as much as digits as its factorization.

105666425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4226667 (or 4226662 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 105666425 is about 10279.4175418649. The cubic root of 105666425 is about 472.7653856610.

The spelling of 105666425 in words is "one hundred five million, six hundred sixty-six thousand, four hundred twenty-five".