528346643825 has 48 divisors (see below), whose sum is σ = 879641782656. Its totient is φ = 304023628800.

The previous prime is 528346643819. The next prime is 528346643827.

528346643825 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 528346643825 - 2⁴ = 528346643809 is a prime.

It is a super-2 number, since 2×528346643825² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (528346643827) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10531352 + ... + 10581401.

It is an arithmetic number, because the mean of its divisors is an integer number (18325870472).

Almost surely, 2^528346643825 is an apocalyptic number.

528346643825 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

528346643825 is a deficient number, since it is larger than the sum of its proper divisors (351295138831).

528346643825 is a wasteful number, since it uses less digits than its factorization.

528346643825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21112794 (or 21112789 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 56.

The spelling of 528346643825 in words is "five hundred twenty-eight billion, three hundred forty-six million, six hundred forty-three thousand, eight hundred twenty-five".