16427825 has 6 divisors (see below), whose sum is σ = 20370534. Its totient is φ = 13142240.

The previous prime is 16427809. The next prime is 16427843. The reversal of 16427825 is 52872461.

It can be written as a sum of positive squares in 3 ways, for example, as 3236401 + 13191424 = 1799^2 + 3632^2 .

It is not a de Polignac number, because 16427825 - 2⁴ = 16427809 is a prime.

It is a Duffinian 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, 328532 + ... + 328581.

It is an arithmetic number, because the mean of its divisors is an integer number (3395089).

Almost surely, 2^16427825 is an apocalyptic number.

It is an amenable number.

16427825 is a deficient number, since it is larger than the sum of its proper divisors (3942709).

16427825 is an equidigital number, since it uses as much as digits as its factorization.

16427825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657123 (or 657118 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 16427825 is about 4053.1253373169. The cubic root of 16427825 is about 254.2104245483.

The spelling of 16427825 in words is "sixteen million, four hundred twenty-seven thousand, eight hundred twenty-five".