525820163 has 4 divisors (see below), whose sum is σ = 573622008. Its totient is φ = 478018320.

The previous prime is 525820157. The next prime is 525820223. The reversal of 525820163 is 361028525.

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

It is a cyclic number.

It is not a de Polignac number, because 525820163 - 2⁴ = 525820147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525820133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23900906 + ... + 23900927.

It is an arithmetic number, because the mean of its divisors is an integer number (143405502).

Almost surely, 2^525820163 is an apocalyptic number.

525820163 is a deficient number, since it is larger than the sum of its proper divisors (47801845).

525820163 is a wasteful number, since it uses less digits than its factorization.

525820163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47801844.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 525820163 is about 22930.7689142776. The cubic root of 525820163 is about 807.1341915825.

Adding to 525820163 its reverse (361028525), we get a palindrome (886848688).

The spelling of 525820163 in words is "five hundred twenty-five million, eight hundred twenty thousand, one hundred sixty-three".