2212681525 has 6 divisors (see below), whose sum is σ = 2743725122. Its totient is φ = 1770145200.

The previous prime is 2212681507. The next prime is 2212681547. The reversal of 2212681525 is 5251862122.

It can be written as a sum of positive squares in 3 ways, for example, as 640241809 + 1572439716 = 25303^2 + 39654^2 .

It is not a de Polignac number, because 2212681525 - 2⁹ = 2212681013 is a prime.

It is a Duffinian number.

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 5 ways as a sum of consecutive naturals, for example, 44253606 + ... + 44253655.

Almost surely, 2^2212681525 is an apocalyptic number.

2212681525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2212681525 is a deficient number, since it is larger than the sum of its proper divisors (531043597).

2212681525 is an equidigital number, since it uses as much as digits as its factorization.

2212681525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88507271 (or 88507266 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 2212681525 is about 47039.1488549697. The cubic root of 2212681525 is about 1303.0856730268.

The spelling of 2212681525 in words is "two billion, two hundred twelve million, six hundred eighty-one thousand, five hundred twenty-five".