16550525 has 6 divisors (see below), whose sum is σ = 20522682. Its totient is φ = 13240400.

The previous prime is 16550509. The next prime is 16550549. The reversal of 16550525 is 52505561.

It can be written as a sum of positive squares in 3 ways, for example, as 2247001 + 14303524 = 1499^2 + 3782^2 .

It is not a de Polignac number, because 16550525 - 2⁴ = 16550509 is a prime.

It is a Duffinian number.

It is a congruent 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, 330986 + ... + 331035.

It is an arithmetic number, because the mean of its divisors is an integer number (3420447).

Almost surely, 2^16550525 is an apocalyptic number.

It is an amenable number.

16550525 is a deficient number, since it is larger than the sum of its proper divisors (3972157).

16550525 is an equidigital number, since it uses as much as digits as its factorization.

16550525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662031 (or 662026 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 16550525 is about 4068.2336461909. The cubic root of 16550525 is about 254.8417575181.

The spelling of 16550525 in words is "sixteen million, five hundred fifty thousand, five hundred twenty-five".