8015915251 has 2 divisors, whose sum is σ = 8015915252. Its totient is φ = 8015915250.

The previous prime is 8015915249. The next prime is 8015915269. The reversal of 8015915251 is 1525195108.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8015915251 - 2¹ = 8015915249 is a prime.

It is a super-2 number, since 2×8015915251² (a number of 21 digits) contains 22 as substring.

Together with 8015915249, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8015915251.

It is not a weakly prime, because it can be changed into another prime (8015915221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4007957625 + 4007957626.

It is an arithmetic number, because the mean of its divisors is an integer number (4007957626).

Almost surely, 2^8015915251 is an apocalyptic number.

8015915251 is a deficient number, since it is larger than the sum of its proper divisors (1).

8015915251 is an equidigital number, since it uses as much as digits as its factorization.

8015915251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 37.

The square root of 8015915251 is about 89531.6438528859. The cubic root of 8015915251 is about 2001.3253923902.

The spelling of 8015915251 in words is "eight billion, fifteen million, nine hundred fifteen thousand, two hundred fifty-one".