16642125 has 32 divisors (see below), whose sum is σ = 30775680. Its totient is φ = 8874000.

The previous prime is 16642123. The next prime is 16642127. The reversal of 16642125 is 52124661.

16642125 is a `hidden beast` number, since 1 + 6 + 642 + 12 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (16642123) and next prime (16642127).

It is not a de Polignac number, because 16642125 - 2¹ = 16642123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16642121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 910 + ... + 5840.

It is an arithmetic number, because the mean of its divisors is an integer number (961740).

Almost surely, 2^16642125 is an apocalyptic number.

16642125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16642125 is a deficient number, since it is larger than the sum of its proper divisors (14133555).

16642125 is an equidigital number, since it uses as much as digits as its factorization.

16642125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4955 (or 4939 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 16642125 is about 4079.4760693011. The cubic root of 16642125 is about 255.3110391374.

Adding to 16642125 its reverse (52124661), we get a palindrome (68766786).

The spelling of 16642125 in words is "sixteen million, six hundred forty-two thousand, one hundred twenty-five".