525421563 has 16 divisors (see below), whose sum is σ = 708164352. Its totient is φ = 346500000.

The previous prime is 525421543. The next prime is 525421607. The reversal of 525421563 is 365124525.

It is not a de Polignac number, because 525421563 - 2²⁰ = 524372987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (525421543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111393 + ... + 116013.

It is an arithmetic number, because the mean of its divisors is an integer number (44260272).

Almost surely, 2^525421563 is an apocalyptic number.

525421563 is a deficient number, since it is larger than the sum of its proper divisors (182742789).

525421563 is a wasteful number, since it uses less digits than its factorization.

525421563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026.

The product of its digits is 36000, while the sum is 33.

The square root of 525421563 is about 22922.0758876678. The cubic root of 525421563 is about 806.9301896313.

The spelling of 525421563 in words is "five hundred twenty-five million, four hundred twenty-one thousand, five hundred sixty-three".