525505066 has 16 divisors (see below), whose sum is σ = 801702720. Its totient is φ = 258307200.

The previous prime is 525505063. The next prime is 525505069. The reversal of 525505066 is 660505525.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (525505063) and next prime (525505069).

It is not an unprimeable number, because it can be changed into a prime (525505061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20325 + ... + 38263.

It is an arithmetic number, because the mean of its divisors is an integer number (50106420).

Almost surely, 2^525505066 is an apocalyptic number.

525505066 is a deficient number, since it is larger than the sum of its proper divisors (276197654).

525505066 is a wasteful number, since it uses less digits than its factorization.

525505066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18189.

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 525505066 is about 22923.8972690073. The cubic root of 525505066 is about 806.9729346873.

The spelling of 525505066 in words is "five hundred twenty-five million, five hundred five thousand, sixty-six".