525745663 has 4 divisors (see below), whose sum is σ = 525800160. Its totient is φ = 525691168.

The previous prime is 525745657. The next prime is 525745673. The reversal of 525745663 is 366547525.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525745663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525745603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8458 + ... + 33511.

It is an arithmetic number, because the mean of its divisors is an integer number (131450040).

Almost surely, 2^525745663 is an apocalyptic number.

525745663 is a deficient number, since it is larger than the sum of its proper divisors (54497).

525745663 is a wasteful number, since it uses less digits than its factorization.

525745663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54496.

The product of its digits is 756000, while the sum is 43.

The square root of 525745663 is about 22929.1444018306. The cubic root of 525745663 is about 807.0960706040.

The spelling of 525745663 in words is "five hundred twenty-five million, seven hundred forty-five thousand, six hundred sixty-three".