511825 has 12 divisors (see below), whose sum is σ = 647280. Its totient is φ = 401360.

The previous prime is 511811. The next prime is 511831. The reversal of 511825 is 528115.

511825 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 511825 - 2⁵ = 511793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 511796 and 511805.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1302 + ... + 1648.

It is an arithmetic number, because the mean of its divisors is an integer number (53940).

2⁵¹¹⁸²⁵ is an apocalyptic number.

It is an amenable number.

511825 is a deficient number, since it is larger than the sum of its proper divisors (135455).

511825 is a wasteful number, since it uses less digits than its factorization.

511825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 411 counting only the distinct ones).

The product of its digits is 400, while the sum is 22.

The square root of 511825 is about 715.4194573815. The cubic root of 511825 is about 79.9908843780.

Subtracting 511825 from its reverse (528115), we obtain a triangular number (16290 = T₁₈₀).

The spelling of 511825 in words is "five hundred eleven thousand, eight hundred twenty-five".