525421303 has 16 divisors (see below), whose sum is σ = 583191936. Its totient is φ = 469355040.

The previous prime is 525421301. The next prime is 525421339. The reversal of 525421303 is 303124525.

It is not a de Polignac number, because 525421303 - 2¹ = 525421301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525421301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451200 + ... + 452362.

It is an arithmetic number, because the mean of its divisors is an integer number (36449496).

Almost surely, 2^525421303 is an apocalyptic number.

525421303 is a deficient number, since it is larger than the sum of its proper divisors (57770633).

525421303 is a wasteful number, since it uses less digits than its factorization.

525421303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 525421303 is about 22922.0702162785. The cubic root of 525421303 is about 806.9300565307.

Adding to 525421303 its reverse (303124525), we get a palindrome (828545828).

The spelling of 525421303 in words is "five hundred twenty-five million, four hundred twenty-one thousand, three hundred three".