525500055 has 80 divisors (see below), whose sum is σ = 972259200. Its totient is φ = 271434240.

The previous prime is 525500047. The next prime is 525500077. The reversal of 525500055 is 550005525.

It is a happy number.

It is not a de Polignac number, because 525500055 - 2³ = 525500047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2198626 + ... + 2198864.

It is an arithmetic number, because the mean of its divisors is an integer number (12153240).

Almost surely, 2^525500055 is an apocalyptic number.

525500055 is a deficient number, since it is larger than the sum of its proper divisors (446759145).

525500055 is a wasteful number, since it uses less digits than its factorization.

525500055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 27.

The square root of 525500055 is about 22923.7879723225. The cubic root of 525500055 is about 806.9703696919.

The spelling of 525500055 in words is "five hundred twenty-five million, five hundred thousand, fifty-five".