16803025 has 12 divisors (see below), whose sum is σ = 20900572. Its totient is φ = 13400640.

The previous prime is 16802993. The next prime is 16803029. The reversal of 16803025 is 52030861.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 221841 + 16581184 = 471^2 + 4072^2 .

It is not a de Polignac number, because 16803025 - 2⁵ = 16802993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16803029) 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, 9079 + ... + 10771.

Almost surely, 2^16803025 is an apocalyptic number.

It is an amenable number.

16803025 is a deficient number, since it is larger than the sum of its proper divisors (4097547).

16803025 is a wasteful number, since it uses less digits than its factorization.

16803025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100 (or 2095 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 16803025 is about 4099.1493019894. The cubic root of 16803025 is about 256.1312041066.

Adding to 16803025 its reverse (52030861), we get a palindrome (68833886).

The spelling of 16803025 in words is "sixteen million, eight hundred three thousand, twenty-five".