520243425 has 96 divisors (see below), whose sum is σ = 1041183360. Its totient is φ = 253152000.

The previous prime is 520243411. The next prime is 520243429. The reversal of 520243425 is 524342025.

It is a happy number.

520243425 is a `hidden beast` number, since 5 + 202 + 434 + 25 = 666.

It is not a de Polignac number, because 520243425 - 2⁵ = 520243393 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520243429) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 885982 + ... + 886568.

It is an arithmetic number, because the mean of its divisors is an integer number (10845660).

Almost surely, 2^520243425 is an apocalyptic number.

It is an amenable number.

520243425 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

520243425 is a wasteful number, since it uses less digits than its factorization.

520243425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720 (or 709 counting only the distinct ones).

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

The square root of 520243425 is about 22808.8453236897. The cubic root of 520243425 is about 804.2706122925.

The spelling of 520243425 in words is "five hundred twenty million, two hundred forty-three thousand, four hundred twenty-five".