2155523325 has 12 divisors (see below), whose sum is σ = 3563798688. Its totient is φ = 1149612400.

The previous prime is 2155523317. The next prime is 2155523351. The reversal of 2155523325 is 5233255512.

It is not a de Polignac number, because 2155523325 - 2³ = 2155523317 is a prime.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 14370081 + ... + 14370230.

It is an arithmetic number, because the mean of its divisors is an integer number (296983224).

Almost surely, 2^2155523325 is an apocalyptic number.

2155523325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2155523325 is a deficient number, since it is larger than the sum of its proper divisors (1408275363).

2155523325 is a wasteful number, since it uses less digits than its factorization.

2155523325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28740324 (or 28740319 counting only the distinct ones).

The product of its digits is 45000, while the sum is 33.

The square root of 2155523325 is about 46427.6138197948. The cubic root of 2155523325 is about 1291.7671682235.

Adding to 2155523325 its reverse (5233255512), we get a palindrome (7388778837).

The spelling of 2155523325 in words is "two billion, one hundred fifty-five million, five hundred twenty-three thousand, three hundred twenty-five".