2115225649 has 2 divisors, whose sum is σ = 2115225650. Its totient is φ = 2115225648.

The previous prime is 2115225631. The next prime is 2115225653. The reversal of 2115225649 is 9465225112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1683625024 + 431600625 = 41032^2 + 20775^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115225649 - 2¹⁷ = 2115094577 is a prime.

It is not a weakly prime, because it can be changed into another prime (2115225149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057612824 + 1057612825.

It is an arithmetic number, because the mean of its divisors is an integer number (1057612825).

Almost surely, 2^2115225649 is an apocalyptic number.

It is an amenable number.

2115225649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115225649 is an equidigital number, since it uses as much as digits as its factorization.

2115225649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 37.

The square root of 2115225649 is about 45991.5823711253. The cubic root of 2115225649 is about 1283.6665802964. Note that the first 3 decimals are identical.

The spelling of 2115225649 in words is "two billion, one hundred fifteen million, two hundred twenty-five thousand, six hundred forty-nine".