525664550 has 48 divisors (see below), whose sum is σ = 1011430800. Its totient is φ = 203103360.

The previous prime is 525664549. The next prime is 525664553. The reversal of 525664550 is 55466525.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525664553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274697 + ... + 276603.

It is an arithmetic number, because the mean of its divisors is an integer number (21071475).

Almost surely, 2^525664550 is an apocalyptic number.

525664550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

525664550 is a deficient number, since it is larger than the sum of its proper divisors (485766250).

525664550 is a wasteful number, since it uses less digits than its factorization.

525664550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105 (or 2100 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The square root of 525664550 is about 22927.3755584890. The cubic root of 525664550 is about 807.0545617179.

The spelling of 525664550 in words is "five hundred twenty-five million, six hundred sixty-four thousand, five hundred fifty".