520155552525 has 24 divisors (see below), whose sum is σ = 982846302144. Its totient is φ = 237785395200.

The previous prime is 520155552493. The next prime is 520155552529. The reversal of 520155552525 is 525255551025.

It is a happy number.

It is not a de Polignac number, because 520155552525 - 2⁵ = 520155552493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520155552529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 495385716 + ... + 495386765.

It is an arithmetic number, because the mean of its divisors is an integer number (40951929256).

Almost surely, 2^520155552525 is an apocalyptic number.

It is an amenable number.

520155552525 is a deficient number, since it is larger than the sum of its proper divisors (462690749619).

520155552525 is a wasteful number, since it uses less digits than its factorization.

520155552525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990772501 (or 990772496 counting only the distinct ones).

The product of its (nonzero) digits is 625000, while the sum is 42.

The spelling of 520155552525 in words is "five hundred twenty billion, one hundred fifty-five million, five hundred fifty-two thousand, five hundred twenty-five".