2564122515 has 8 divisors (see below), whose sum is σ = 4102596048. Its totient is φ = 1367532000.

The previous prime is 2564122511. The next prime is 2564122531. The reversal of 2564122515 is 5152214652.

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

It is not a de Polignac number, because 2564122515 - 2² = 2564122511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2564122511) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 85470736 + ... + 85470765.

It is an arithmetic number, because the mean of its divisors is an integer number (512824506).

Almost surely, 2^2564122515 is an apocalyptic number.

2564122515 is a deficient number, since it is larger than the sum of its proper divisors (1538473533).

2564122515 is a wasteful number, since it uses less digits than its factorization.

2564122515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170941509.

The product of its digits is 24000, while the sum is 33.

The square root of 2564122515 is about 50637.1653531277. The cubic root of 2564122515 is about 1368.7146761802.

The spelling of 2564122515 in words is "two billion, five hundred sixty-four million, one hundred twenty-two thousand, five hundred fifteen".