525302442 has 128 divisors (see below), whose sum is σ = 1382400000. Its totient is φ = 147773808.

The previous prime is 525302441. The next prime is 525302467. The reversal of 525302442 is 244203525.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (525302441) 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 63 ways as a sum of consecutive naturals, for example, 1463059 + ... + 1463417.

It is an arithmetic number, because the mean of its divisors is an integer number (10800000).

Almost surely, 2^525302442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525302442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691200000).

525302442 is an abundant number, since it is smaller than the sum of its proper divisors (857097558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525302442 is a wasteful number, since it uses less digits than its factorization.

525302442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 525302442 is about 22919.4773500619. The cubic root of 525302442 is about 806.8692039372.

Adding to 525302442 its reverse (244203525), we get a palindrome (769505967).

The spelling of 525302442 in words is "five hundred twenty-five million, three hundred two thousand, four hundred forty-two".