16025121 has 24 divisors (see below), whose sum is σ = 27436864. Its totient is φ = 9156240.

The previous prime is 16025117. The next prime is 16025129. The reversal of 16025121 is 12152061.

It is not a de Polignac number, because 16025121 - 2² = 16025117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16025094 and 16025103.

It is not an unprimeable number, because it can be changed into a prime (16025129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3010 + ... + 6411.

Almost surely, 2^16025121 is an apocalyptic number.

It is an amenable number.

16025121 is a deficient number, since it is larger than the sum of its proper divisors (11411743).

16025121 is an frugal number, since it uses more digits than its factorization.

16025121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9443 (or 9431 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 16025121 is about 4003.1388934185. The cubic root of 16025121 is about 252.1160180070.

Adding to 16025121 its reverse (12152061), we get a palindrome (28177182).

It can be divided in two parts, 160 and 25121, that added together give a square (25281 = 159²).

The spelling of 16025121 in words is "sixteen million, twenty-five thousand, one hundred twenty-one".