525500055121 has 4 divisors (see below), whose sum is σ = 526280887972. Its totient is φ = 524719222272.

The previous prime is 525500055097. The next prime is 525500055131. The reversal of 525500055121 is 121550005525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 264211420225 + 261288634896 = 514015^2 + 511164^2 .

It is a cyclic number.

It is not a de Polignac number, because 525500055121 - 2¹⁵ = 525500022353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525500055131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390415416 + ... + 390416761.

It is an arithmetic number, because the mean of its divisors is an integer number (131570221993).

Almost surely, 2^525500055121 is an apocalyptic number.

It is an amenable number.

525500055121 is a deficient number, since it is larger than the sum of its proper divisors (780832851).

525500055121 is an equidigital number, since it uses as much as digits as its factorization.

525500055121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780832850.

The product of its (nonzero) digits is 12500, while the sum is 31.

The spelling of 525500055121 in words is "five hundred twenty-five billion, five hundred million, fifty-five thousand, one hundred twenty-one".