105625665 has 12 divisors (see below), whose sum is σ = 183084564. Its totient is φ = 56333664.

The previous prime is 105625651. The next prime is 105625691. The reversal of 105625665 is 566526501.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29517489 + 76108176 = 5433^2 + 8724^2 .

It is not a de Polignac number, because 105625665 - 2⁵ = 105625633 is a prime.

It is a super-2 number, since 2×105625665² = 22313562213384450, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1173574 + ... + 1173663.

It is an arithmetic number, because the mean of its divisors is an integer number (15257047).

Almost surely, 2^105625665 is an apocalyptic number.

105625665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105625665 is a deficient number, since it is larger than the sum of its proper divisors (77458899).

105625665 is a wasteful number, since it uses less digits than its factorization.

105625665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347248 (or 2347245 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 105625665 is about 10277.4347480293. The cubic root of 105625665 is about 472.7045893220.

The spelling of 105625665 in words is "one hundred five million, six hundred twenty-five thousand, six hundred sixty-five".