525342420 has 36 divisors (see below), whose sum is σ = 1593539220. Its totient is φ = 140091264.

The previous prime is 525342409. The next prime is 525342437. The reversal of 525342420 is 24243525.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 239259024 + 286083396 = 15468^2 + 16914^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1459105 + ... + 1459464.

Almost surely, 2^525342420 is an apocalyptic number.

It is an amenable number.

525342420 is an abundant number, since it is smaller than the sum of its proper divisors (1068196800).

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

525342420 is a wasteful number, since it uses less digits than its factorization.

525342420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918584 (or 2918579 counting only the distinct ones).

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

The square root of 525342420 is about 22920.3494737755. The cubic root of 525342420 is about 806.8896722720.

Adding to 525342420 its reverse (24243525), we get a palindrome (549585945).

The spelling of 525342420 in words is "five hundred twenty-five million, three hundred forty-two thousand, four hundred twenty".