820525000052 has 6 divisors (see below), whose sum is σ = 1435918750098. Its totient is φ = 410262500024.

The previous prime is 820525000027. The next prime is 820525000129. The reversal of 820525000052 is 250000525028.

It can be written as a sum of positive squares in only one way, i.e., 819959226256 + 565773796 = 905516^2 + 23786^2 .

It is a super-2 number, since 2×820525000052² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 820524999979 and 820525000024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102565625003 + ... + 102565625010.

It is an arithmetic number, because the mean of its divisors is an integer number (239319791683).

Almost surely, 2^820525000052 is an apocalyptic number.

It is an amenable number.

820525000052 is a deficient number, since it is larger than the sum of its proper divisors (615393750046).

820525000052 is a wasteful number, since it uses less digits than its factorization.

820525000052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205131250017 (or 205131250015 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 820525000052 in words is "eight hundred twenty billion, five hundred twenty-five million, fifty-two", and thus it is an aban number.