2122522565 has 8 divisors (see below), whose sum is σ = 2548541688. Its totient is φ = 1697008320.

The previous prime is 2122522559. The next prime is 2122522583. The reversal of 2122522565 is 5652252212.

It can be written as a sum of positive squares in 4 ways, for example, as 195049156 + 1927473409 = 13966^2 + 43903^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2122522565 - 2¹² = 2122518469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116906 + ... + 133835.

It is an arithmetic number, because the mean of its divisors is an integer number (318567711).

Almost surely, 2^2122522565 is an apocalyptic number.

It is an amenable number.

2122522565 is a deficient number, since it is larger than the sum of its proper divisors (426019123).

2122522565 is a wasteful number, since it uses less digits than its factorization.

2122522565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252439.

The product of its digits is 24000, while the sum is 32.

The square root of 2122522565 is about 46070.8428943947. The cubic root of 2122522565 is about 1285.1409788448.

Adding to 2122522565 its reverse (5652252212), we get a palindrome (7774774777).

The spelling of 2122522565 in words is "two billion, one hundred twenty-two million, five hundred twenty-two thousand, five hundred sixty-five".