525657 has 16 divisors (see below), whose sum is σ = 810432. Its totient is φ = 299520.

The previous prime is 525649. The next prime is 525671. The reversal of 525657 is 756525.

It is not a de Polignac number, because 525657 - 2³ = 525649 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (525607) 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 in 15 ways as a sum of consecutive naturals, for example, 93 + ... + 1029.

It is an arithmetic number, because the mean of its divisors is an integer number (50652).

2⁵²⁵⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

525657 is a deficient number, since it is larger than the sum of its proper divisors (284775).

525657 is a wasteful number, since it uses less digits than its factorization.

525657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its digits is 10500, while the sum is 30.

The square root of 525657 is about 725.0220686296. The cubic root of 525657 is about 80.7050697853.

The spelling of 525657 in words is "five hundred twenty-five thousand, six hundred fifty-seven".