816025 has 12 divisors (see below), whose sum is σ = 1156672. Its totient is φ = 559440.

The previous prime is 816019. The next prime is 816037. The reversal of 816025 is 520618.

It is a happy number.

It is not a de Polignac number, because 816025 - 2⁷ = 815897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 815987 and 816005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2157 + ... + 2506.

2⁸¹⁶⁰²⁵ is an apocalyptic number.

It is an amenable number.

816025 is a deficient number, since it is larger than the sum of its proper divisors (340647).

816025 is a wasteful number, since it uses less digits than its factorization.

816025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680 (or 4675 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 816025 is about 903.3410208775. The cubic root of 816025 is about 93.4475288729.

Subtracting from 816025 its sum of digits (22), we obtain a triangular number (816003 = T₁₂₇₇).

The spelling of 816025 in words is "eight hundred sixteen thousand, twenty-five".