16725490 has 8 divisors (see below), whose sum is σ = 30105900. Its totient is φ = 6690192.

The previous prime is 16725481. The next prime is 16725509. The reversal of 16725490 is 9452761.

It can be written as a sum of positive squares in 2 ways, for example, as 16589329 + 136161 = 4073^2 + 369^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 836265 + ... + 836284.

Almost surely, 2^16725490 is an apocalyptic number.

16725490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16725490 is a deficient number, since it is larger than the sum of its proper divisors (13380410).

16725490 is a wasteful number, since it uses less digits than its factorization.

16725490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672556.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 16725490 is about 4089.6809166486. The cubic root of 16725490 is about 255.7366371144.

The spelling of 16725490 in words is "sixteen million, seven hundred twenty-five thousand, four hundred ninety".