525540663 has 16 divisors (see below), whose sum is σ = 779046400. Its totient is φ = 350150040.

The previous prime is 525540661. The next prime is 525540667. The reversal of 525540663 is 366045525.

It is a happy number.

525540663 is a `hidden beast` number, since 52 + 5 + 540 + 6 + 63 = 666.

It is not a de Polignac number, because 525540663 - 2¹ = 525540661 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 (525540661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49458 + ... + 59136.

It is an arithmetic number, because the mean of its divisors is an integer number (48690400).

Almost surely, 2^525540663 is an apocalyptic number.

525540663 is a deficient number, since it is larger than the sum of its proper divisors (253505737).

525540663 is a wasteful number, since it uses less digits than its factorization.

525540663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11699 (or 11693 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 525540663 is about 22924.6736727047. The cubic root of 525540663 is about 806.9911553597.

The spelling of 525540663 in words is "five hundred twenty-five million, five hundred forty thousand, six hundred sixty-three".