2215216046525 has 24 divisors (see below), whose sum is σ = 2841738239880. Its totient is φ = 1710972650240.

The previous prime is 2215216046521. The next prime is 2215216046551. The reversal of 2215216046525 is 5256406125122.

It can be written as a sum of positive squares in 12 ways, for example, as 1538897313529 + 676318732996 = 1240523^2 + 822386^2 .

It is not a de Polignac number, because 2215216046525 - 2² = 2215216046521 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215216046521) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 15715259 + ... + 15855591.

It is an arithmetic number, because the mean of its divisors is an integer number (118405759995).

Almost surely, 2^{2215216046525} is an apocalyptic number.

2215216046525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2215216046525 is a deficient number, since it is larger than the sum of its proper divisors (626522193355).

2215216046525 is a wasteful number, since it uses less digits than its factorization.

2215216046525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162145 (or 162140 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 2215216046525 in words is "two trillion, two hundred fifteen billion, two hundred sixteen million, forty-six thousand, five hundred twenty-five".