525785 has 8 divisors (see below), whose sum is σ = 679560. Its totient is φ = 388224.

The previous prime is 525781. The next prime is 525809. The reversal of 525785 is 587525.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23104 + 502681 = 152^2 + 709^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 525785 - 2² = 525781 is a prime.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3980 + ... + 4109.

It is an arithmetic number, because the mean of its divisors is an integer number (84945).

2⁵²⁵⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

525785 is a deficient number, since it is larger than the sum of its proper divisors (153775).

525785 is a wasteful number, since it uses less digits than its factorization.

525785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8107.

The product of its digits is 14000, while the sum is 32.

The square root of 525785 is about 725.1103364316. The cubic root of 525785 is about 80.7116199441.

The spelling of 525785 in words is "five hundred twenty-five thousand, seven hundred eighty-five".