525222420 has 24 divisors (see below), whose sum is σ = 1470622944. Its totient is φ = 140059296.

The previous prime is 525222413. The next prime is 525222427. The reversal of 525222420 is 24222525.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (525222413) and next prime (525222427).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525222427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4376794 + ... + 4376913.

It is an arithmetic number, because the mean of its divisors is an integer number (61275956).

Almost surely, 2^525222420 is an apocalyptic number.

It is an amenable number.

525222420 is an abundant number, since it is smaller than the sum of its proper divisors (945400524).

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

525222420 is a wasteful number, since it uses less digits than its factorization.

525222420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8753719 (or 8753717 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 525222420 is about 22917.7315631369. The cubic root of 525222420 is about 806.8282303563.

Adding to 525222420 its reverse (24222525), we get a palindrome (549444945).

It can be divided in two parts, 5252 and 22420, that added together give a palindrome (27672).

The spelling of 525222420 in words is "five hundred twenty-five million, two hundred twenty-two thousand, four hundred twenty".