16653425 has 12 divisors (see below), whose sum is σ = 20701056. Its totient is φ = 13290000.

The previous prime is 16653419. The next prime is 16653431. The reversal of 16653425 is 52435661.

It is an interprime number because it is at equal distance from previous prime (16653419) and next prime (16653431).

It is not a de Polignac number, because 16653425 - 2⁶ = 16653361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16653391 and 16653400.

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, 18332 + ... + 19218.

It is an arithmetic number, because the mean of its divisors is an integer number (1725088).

Almost surely, 2^16653425 is an apocalyptic number.

It is an amenable number.

16653425 is a deficient number, since it is larger than the sum of its proper divisors (4047631).

16653425 is an equidigital number, since it uses as much as digits as its factorization.

16653425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648 (or 1643 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 16653425 is about 4080.8608160534. The cubic root of 16653425 is about 255.3688114474.

The spelling of 16653425 in words is "sixteen million, six hundred fifty-three thousand, four hundred twenty-five".