2515206649 has 2 divisors, whose sum is σ = 2515206650. Its totient is φ = 2515206648.

The previous prime is 2515206641. The next prime is 2515206667. The reversal of 2515206649 is 9466025152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1956735225 + 558471424 = 44235^2 + 23632^2 .

It is a cyclic number.

It is not a de Polignac number, because 2515206649 - 2³ = 2515206641 is a prime.

It is not a weakly prime, because it can be changed into another prime (2515206641) 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 as a sum of consecutive naturals, namely, 1257603324 + 1257603325.

It is an arithmetic number, because the mean of its divisors is an integer number (1257603325).

Almost surely, 2^2515206649 is an apocalyptic number.

It is an amenable number.

2515206649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2515206649 is an equidigital number, since it uses as much as digits as its factorization.

2515206649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 2515206649 is about 50151.8359484476. The cubic root of 2515206649 is about 1359.9550606907.

The spelling of 2515206649 in words is "two billion, five hundred fifteen million, two hundred six thousand, six hundred forty-nine".