16125840 has 60 divisors (see below), whose sum is σ = 54158364. Its totient is φ = 4300032.

The previous prime is 16125803. The next prime is 16125869. The reversal of 16125840 is 4852161.

16125840 is a `hidden beast` number, since 1 + 612 + 5 + 8 + 40 = 666.

16125840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11614464 + 4511376 = 3408^2 + 2124^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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, 10479 + ... + 11918.

Almost surely, 2^16125840 is an apocalyptic number.

16125840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16125840 is an abundant number, since it is smaller than the sum of its proper divisors (38032524).

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

16125840 is a wasteful number, since it uses less digits than its factorization.

16125840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22416 (or 22407 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 16125840 is about 4015.6991919216. The cubic root of 16125840 is about 252.6431041891.

The spelling of 16125840 in words is "sixteen million, one hundred twenty-five thousand, eight hundred forty".