525385 has 16 divisors (see below), whose sum is σ = 763776. Its totient is φ = 338688.

The previous prime is 525379. The next prime is 525391. The reversal of 525385 is 583525.

It is an interprime number because it is at equal distance from previous prime (525379) and next prime (525391).

It is not a de Polignac number, because 525385 - 2³ = 525377 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154 + ... + 1036.

It is an arithmetic number, because the mean of its divisors is an integer number (47736).

2⁵²⁵³⁸⁵ is an apocalyptic number.

It is an amenable number.

525385 is a deficient number, since it is larger than the sum of its proper divisors (238391).

525385 is a wasteful number, since it uses less digits than its factorization.

525385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912.

The product of its digits is 6000, while the sum is 28.

The square root of 525385 is about 724.8344638605. The cubic root of 525385 is about 80.6911471663.

The spelling of 525385 in words is "five hundred twenty-five thousand, three hundred eighty-five".