525766 has 4 divisors (see below), whose sum is σ = 788652. Its totient is φ = 262882.

The previous prime is 525739. The next prime is 525769. The reversal of 525766 is 667525.

525766 = T₂₉₀ + T₂₉₁ + ... + T₃₀₁.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131440 + ... + 131443.

It is an arithmetic number, because the mean of its divisors is an integer number (197163).

2⁵²⁵⁷⁶⁶ is an apocalyptic number.

525766 is a deficient number, since it is larger than the sum of its proper divisors (262886).

525766 is a wasteful number, since it uses less digits than its factorization.

525766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262885.

The product of its digits is 12600, while the sum is 31.

The square root of 525766 is about 725.0972348589. The cubic root of 525766 is about 80.7106477221.

The spelling of 525766 in words is "five hundred twenty-five thousand, seven hundred sixty-six".