525685566540 has 48 divisors (see below), whose sum is σ = 1485675862272. Its totient is φ = 138872696256.

The previous prime is 525685566533. The next prime is 525685566541. The reversal of 525685566540 is 45665586525.

It is not an unprimeable number, because it can be changed into a prime (525685566541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40934824 + ... + 40947663.

It is an arithmetic number, because the mean of its divisors is an integer number (30951580464).

Almost surely, 2^525685566540 is an apocalyptic number.

It is an amenable number.

525685566540 is an abundant number, since it is smaller than the sum of its proper divisors (959990295732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525685566540 is a wasteful number, since it uses less digits than its factorization.

525685566540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81882606 (or 81882604 counting only the distinct ones).

The product of its (nonzero) digits is 43200000, while the sum is 57.

The spelling of 525685566540 in words is "five hundred twenty-five billion, six hundred eighty-five million, five hundred sixty-six thousand, five hundred forty".