16653025 has 12 divisors (see below), whose sum is σ = 21737200. Its totient is φ = 12620880.

The previous prime is 16653023. The next prime is 16653029. The reversal of 16653025 is 52035661.

It is not a de Polignac number, because 16653025 - 2¹ = 16653023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16652984 and 16653002.

It is not an unprimeable number, because it can be changed into a prime (16653023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17055 + ... + 18004.

Almost surely, 2^16653025 is an apocalyptic number.

It is an amenable number.

16653025 is a deficient number, since it is larger than the sum of its proper divisors (5084175).

16653025 is a wasteful number, since it uses less digits than its factorization.

16653025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35088 (or 35083 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 16653025 is about 4080.8118064914. The cubic root of 16653025 is about 255.3667668561.

Adding to 16653025 its reverse (52035661), we get a palindrome (68688686).

The spelling of 16653025 in words is "sixteen million, six hundred fifty-three thousand, twenty-five".