16625330 has 16 divisors (see below), whose sum is σ = 30046680. Its totient is φ = 6623232.

The previous prime is 16625327. The next prime is 16625353. The reversal of 16625330 is 3352661.

It can be written as a sum of positive squares in 4 ways, for example, as 13965169 + 2660161 = 3737^2 + 1631^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16625330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665 + ... + 5804.

Almost surely, 2^16625330 is an apocalyptic number.

16625330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16625330 is a deficient number, since it is larger than the sum of its proper divisors (13421350).

16625330 is a wasteful number, since it uses less digits than its factorization.

16625330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6733.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 16625330 is about 4077.4170745706. The cubic root of 16625330 is about 255.2251247853.

Adding to 16625330 its reverse (3352661), we get a palindrome (19977991).

The spelling of 16625330 in words is "sixteen million, six hundred twenty-five thousand, three hundred thirty".