2211516525 has 12 divisors (see below), whose sum is σ = 3656374112. Its totient is φ = 1179475440.

The previous prime is 2211516511. The next prime is 2211516551. The reversal of 2211516525 is 5256151122.

It is not a de Polignac number, because 2211516525 - 2¹⁹ = 2210992237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211516492 and 2211516501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14743369 + ... + 14743518.

Almost surely, 2^2211516525 is an apocalyptic number.

2211516525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2211516525 is a deficient number, since it is larger than the sum of its proper divisors (1444857587).

2211516525 is a wasteful number, since it uses less digits than its factorization.

2211516525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29486900 (or 29486895 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 2211516525 is about 47026.7639222603. The cubic root of 2211516525 is about 1302.8569367927.

Adding to 2211516525 its reverse (5256151122), we get a palindrome (7467667647).

The spelling of 2211516525 in words is "two billion, two hundred eleven million, five hundred sixteen thousand, five hundred twenty-five".