7867225515 has 16 divisors (see below), whose sum is σ = 12635428608. Its totient is φ = 4179897696.

The previous prime is 7867225511. The next prime is 7867225523. The reversal of 7867225515 is 5155227687.

It is not a de Polignac number, because 7867225515 - 2² = 7867225511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7867225511) 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 in 15 ways as a sum of consecutive naturals, for example, 993169 + ... + 1001058.

It is an arithmetic number, because the mean of its divisors is an integer number (789714288).

Almost surely, 2^7867225515 is an apocalyptic number.

7867225515 is a deficient number, since it is larger than the sum of its proper divisors (4768203093).

7867225515 is a wasteful number, since it uses less digits than its factorization.

7867225515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994498.

The product of its digits is 1176000, while the sum is 48.

The square root of 7867225515 is about 88697.3816693593. The cubic root of 7867225515 is about 1988.8736768317.

The spelling of 7867225515 in words is "seven billion, eight hundred sixty-seven million, two hundred twenty-five thousand, five hundred fifteen".