520135531025 has 12 divisors (see below), whose sum is σ = 703601518704. Its totient is φ = 378280386000.

The previous prime is 520135531001. The next prime is 520135531031.

520135531025 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 520135531025 - 2³⁸ = 245257624081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520135530982 and 520135531000.

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, 945700691 + ... + 945701240.

It is an arithmetic number, because the mean of its divisors is an integer number (58633459892).

Almost surely, 2^520135531025 is an apocalyptic number.

520135531025 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

520135531025 is a deficient number, since it is larger than the sum of its proper divisors (183465987679).

520135531025 is a wasteful number, since it uses less digits than its factorization.

520135531025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891401952 (or 1891401947 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 32.

The spelling of 520135531025 in words is "five hundred twenty billion, one hundred thirty-five million, five hundred thirty-one thousand, twenty-five".