520542045225 has 72 divisors (see below), whose sum is σ = 968307589080. Its totient is φ = 267083688960.

The previous prime is 520542045197. The next prime is 520542045229. The reversal of 520542045225 is 522540245025.

520542045225 is a `hidden beast` number, since 5 + 2 + 0 + 5 + 420 + 4 + 5 + 225 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 269083925289 + 251458119936 = 518733^2 + 501456^2 .

It is not a de Polignac number, because 520542045225 - 2⁸ = 520542044969 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 520542045225.

It is not an unprimeable number, because it can be changed into a prime (520542045229) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 389647 + ... + 1092203.

It is an arithmetic number, because the mean of its divisors is an integer number (13448716515).

Almost surely, 2^520542045225 is an apocalyptic number.

It is an amenable number.

520542045225 is a deficient number, since it is larger than the sum of its proper divisors (447765543855).

520542045225 is a wasteful number, since it uses less digits than its factorization.

520542045225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702699 (or 702691 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 36.

The spelling of 520542045225 in words is "five hundred twenty billion, five hundred forty-two million, forty-five thousand, two hundred twenty-five".