16913025 has 18 divisors (see below), whose sum is σ = 30293510. Its totient is φ = 9020160.

The previous prime is 16913009. The next prime is 16913047. The reversal of 16913025 is 52031961.

It can be written as a sum of positive squares in 3 ways, for example, as 1679616 + 15233409 = 1296^2 + 3903^2 .

It is not a de Polignac number, because 16913025 - 2⁴ = 16913009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16913025.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 37360 + ... + 37809.

Almost surely, 2^16913025 is an apocalyptic number.

16913025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16913025 is a deficient number, since it is larger than the sum of its proper divisors (13380485).

16913025 is a wasteful number, since it uses less digits than its factorization.

16913025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75185 (or 75177 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 16913025 is about 4112.5448325824. The cubic root of 16913025 is about 256.6889047653.

Adding to 16913025 its reverse (52031961), we get a palindrome (68944986).

The spelling of 16913025 in words is "sixteen million, nine hundred thirteen thousand, twenty-five".