522425720 has 32 divisors (see below), whose sum is σ = 1215993600. Its totient is φ = 201763968.

The previous prime is 522425719. The next prime is 522425779. The reversal of 522425720 is 27524225.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224024 + ... + 226343.

It is an arithmetic number, because the mean of its divisors is an integer number (37999800).

Almost surely, 2^522425720 is an apocalyptic number.

It is an amenable number.

522425720 is an abundant number, since it is smaller than the sum of its proper divisors (693567880).

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

522425720 is a wasteful number, since it uses less digits than its factorization.

522425720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450407 (or 450403 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 522425720 is about 22856.6340479083. The cubic root of 522425720 is about 805.3936168989.

Adding to 522425720 its reverse (27524225), we get a palindrome (549949945).

The spelling of 522425720 in words is "five hundred twenty-two million, four hundred twenty-five thousand, seven hundred twenty".