7215525225613 has 2 divisors, whose sum is σ = 7215525225614. Its totient is φ = 7215525225612.

The previous prime is 7215525225611. The next prime is 7215525225647. The reversal of 7215525225613 is 3165225255127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5512714238889 + 1702810986724 = 2347917^2 + 1304918^2 .

It is a cyclic number.

It is not a de Polignac number, because 7215525225613 - 2¹ = 7215525225611 is a prime.

Together with 7215525225611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7215525225611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3607762612806 + 3607762612807.

It is an arithmetic number, because the mean of its divisors is an integer number (3607762612807).

Almost surely, 2^{7215525225613} is an apocalyptic number.

It is an amenable number.

7215525225613 is a deficient number, since it is larger than the sum of its proper divisors (1).

7215525225613 is an equidigital number, since it uses as much as digits as its factorization.

7215525225613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260000, while the sum is 46.

The spelling of 7215525225613 in words is "seven trillion, two hundred fifteen billion, five hundred twenty-five million, two hundred twenty-five thousand, six hundred thirteen".