525221013 has 8 divisors (see below), whose sum is σ = 701379648. Its totient is φ = 349604864.

The previous prime is 525220991. The next prime is 525221017. The reversal of 525221013 is 310122525.

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 525221013 - 2⁵ = 525220981 is a prime.

It is a super-2 number, since 2×525221013² = 551714224993492338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525221017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133356 + ... + 137237.

It is an arithmetic number, because the mean of its divisors is an integer number (87672456).

Almost surely, 2^525221013 is an apocalyptic number.

It is an amenable number.

525221013 is a deficient number, since it is larger than the sum of its proper divisors (176158635).

525221013 is a wasteful number, since it uses less digits than its factorization.

525221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271243.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 525221013 is about 22917.7008663609. The cubic root of 525221013 is about 806.8275098943.

Adding to 525221013 its reverse (310122525), we get a palindrome (835343538).

It can be divided in two parts, 52522 and 1013, that added together give a palindrome (53535).

The spelling of 525221013 in words is "five hundred twenty-five million, two hundred twenty-one thousand, thirteen".