2212061525 has 6 divisors (see below), whose sum is σ = 2742956322. Its totient is φ = 1769649200.

The previous prime is 2212061521. The next prime is 2212061557. The reversal of 2212061525 is 5251602122.

It can be written as a sum of positive squares in 3 ways, for example, as 688642564 + 1523418961 = 26242^2 + 39031^2 .

It is not a de Polignac number, because 2212061525 - 2² = 2212061521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2212061494 and 2212061503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212061521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44241206 + ... + 44241255.

It is an arithmetic number, because the mean of its divisors is an integer number (457159387).

Almost surely, 2^2212061525 is an apocalyptic number.

2212061525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2212061525 is a deficient number, since it is larger than the sum of its proper divisors (530894797).

2212061525 is an equidigital number, since it uses as much as digits as its factorization.

2212061525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88482471 (or 88482466 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2212061525 is about 47032.5581379538. The cubic root of 2212061525 is about 1302.9639521526.

Adding to 2212061525 its reverse (5251602122), we get a palindrome (7463663647).

The spelling of 2212061525 in words is "two billion, two hundred twelve million, sixty-one thousand, five hundred twenty-five".