525315663 has 18 divisors (see below), whose sum is σ = 775306584. Its totient is φ = 342746184.

The previous prime is 525315617. The next prime is 525315671. The reversal of 525315663 is 366513525.

It is not a de Polignac number, because 525315663 - 2⁸ = 525315407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525315613) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6670 + ... + 33092.

It is an arithmetic number, because the mean of its divisors is an integer number (43072588).

Almost surely, 2^525315663 is an apocalyptic number.

525315663 is a deficient number, since it is larger than the sum of its proper divisors (249990921).

525315663 is a wasteful number, since it uses less digits than its factorization.

525315663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26523 (or 26473 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 525315663 is about 22919.7657710545. The cubic root of 525315663 is about 806.8759730715.

The spelling of 525315663 in words is "five hundred twenty-five million, three hundred fifteen thousand, six hundred sixty-three".