16047025 has 6 divisors (see below), whose sum is σ = 19898342. Its totient is φ = 12837600.

The previous prime is 16047019. The next prime is 16047037. The reversal of 16047025 is 52074061.

It can be written as a sum of positive squares in 3 ways, for example, as 2862864 + 13184161 = 1692^2 + 3631^2 .

It is not a de Polignac number, because 16047025 - 2⁵ = 16046993 is a prime.

It is a super-2 number, since 2×16047025² = 515014022701250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 641881 = 16047025 / (1 + 6 + 0 + 4 + 7 + 0 + 2 + 5).

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, 320916 + ... + 320965.

Almost surely, 2^16047025 is an apocalyptic number.

It is an amenable number.

16047025 is a deficient number, since it is larger than the sum of its proper divisors (3851317).

16047025 is an equidigital number, since it uses as much as digits as its factorization.

16047025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641891 (or 641886 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 16047025 is about 4005.8738122911. The cubic root of 16047025 is about 252.2308343025.

The spelling of 16047025 in words is "sixteen million, forty-seven thousand, twenty-five".