2516222465 has 4 divisors (see below), whose sum is σ = 3019466964. Its totient is φ = 2012977968.

The previous prime is 2516222461. The next prime is 2516222519. The reversal of 2516222465 is 5642226152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 441966529 + 2074255936 = 21023^2 + 45544^2 .

It is a cyclic number.

It is not a de Polignac number, because 2516222465 - 2² = 2516222461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2516222461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251622242 + ... + 251622251.

It is an arithmetic number, because the mean of its divisors is an integer number (754866741).

Almost surely, 2^2516222465 is an apocalyptic number.

It is an amenable number.

2516222465 is a deficient number, since it is larger than the sum of its proper divisors (503244499).

2516222465 is an equidigital number, since it uses as much as digits as its factorization.

2516222465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503244498.

The product of its digits is 57600, while the sum is 35.

The square root of 2516222465 is about 50161.9623320300. The cubic root of 2516222465 is about 1360.1381176408.

The spelling of 2516222465 in words is "two billion, five hundred sixteen million, two hundred twenty-two thousand, four hundred sixty-five".