2120525155 has 8 divisors (see below), whose sum is σ = 2908148832. Its totient is φ = 1454074368.

The previous prime is 2120525149. The next prime is 2120525213. The reversal of 2120525155 is 5515250212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120525155 - 2⁵ = 2120525123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30293182 + ... + 30293251.

It is an arithmetic number, because the mean of its divisors is an integer number (363518604).

Almost surely, 2^2120525155 is an apocalyptic number.

2120525155 is a deficient number, since it is larger than the sum of its proper divisors (787623677).

2120525155 is an equidigital number, since it uses as much as digits as its factorization.

2120525155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60586445.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 2120525155 is about 46049.1601986399. The cubic root of 2120525155 is about 1284.7377229704.

Adding to 2120525155 its reverse (5515250212), we get a palindrome (7635775367).

It can be divided in two parts, 21205 and 25155, that added together give a triangular number (46360 = T₃₀₄).

The spelling of 2120525155 in words is "two billion, one hundred twenty million, five hundred twenty-five thousand, one hundred fifty-five".