520205525401 has 8 divisors (see below), whose sum is σ = 547762439520. Its totient is φ = 492666378912.

The previous prime is 520205525387. The next prime is 520205525471. The reversal of 520205525401 is 104525502025.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520205525401 - 2⁹ = 520205524889 is a prime.

It is a super-2 number, since 2×520205525401² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520205525471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4381780 + ... + 4498933.

It is an arithmetic number, because the mean of its divisors is an integer number (68470304940).

Almost surely, 2^520205525401 is an apocalyptic number.

It is an amenable number.

520205525401 is a deficient number, since it is larger than the sum of its proper divisors (27556914119).

520205525401 is a wasteful number, since it uses less digits than its factorization.

520205525401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8883815.

The product of its (nonzero) digits is 20000, while the sum is 31.

The spelling of 520205525401 in words is "five hundred twenty billion, two hundred five million, five hundred twenty-five thousand, four hundred one".