5665625406 has 32 divisors (see below), whose sum is σ = 14388890880. Its totient is φ = 1618750008.

The previous prime is 5665625389. The next prime is 5665625417. The reversal of 5665625406 is 6045265665.

It is a happy number.

5665625406 is a `hidden beast` number, since 56 + 6 + 56 + 2 + 540 + 6 = 666.

It is a super-2 number, since 2×5665625406² = 64198622482225329672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7493836 + ... + 7494591.

It is an arithmetic number, because the mean of its divisors is an integer number (449652840).

Almost surely, 2^5665625406 is an apocalyptic number.

5665625406 is an abundant number, since it is smaller than the sum of its proper divisors (8723265474).

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

5665625406 is a wasteful number, since it uses less digits than its factorization.

5665625406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14988445 (or 14988439 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The square root of 5665625406 is about 75270.3487835682. The cubic root of 5665625406 is about 1782.7178744466.

The spelling of 5665625406 in words is "five billion, six hundred sixty-five million, six hundred twenty-five thousand, four hundred six".