16406025 has 48 divisors (see below), whose sum is σ = 29611200. Its totient is φ = 7983360.

The previous prime is 16406023. The next prime is 16406051. The reversal of 16406025 is 52060461.

16406025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16406025 - 2¹ = 16406023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16405986 and 16406004.

It is not an unprimeable number, because it can be changed into a prime (16406023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41127 + ... + 41523.

It is an arithmetic number, because the mean of its divisors is an integer number (616900).

Almost surely, 2^16406025 is an apocalyptic number.

16406025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16406025 is a deficient number, since it is larger than the sum of its proper divisors (13205175).

16406025 is a wasteful number, since it uses less digits than its factorization.

16406025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 16406025 is about 4050.4351618067. The cubic root of 16406025 is about 254.0979276026.

Adding to 16406025 its reverse (52060461), we get a palindrome (68466486).

The spelling of 16406025 in words is "sixteen million, four hundred six thousand, twenty-five".