1265015262515 has 16 divisors (see below), whose sum is σ = 1535132995200. Its totient is φ = 1000603287552.

The previous prime is 1265015262421. The next prime is 1265015262541. The reversal of 1265015262515 is 5152625105621.

It is not a de Polignac number, because 1265015262515 - 2¹⁰ = 1265015261491 is a prime.

It is a super-2 number, since 2×1265015262515² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 20247014 + ... + 20309396.

It is an arithmetic number, because the mean of its divisors is an integer number (95945812200).

Almost surely, 2^{1265015262515} is an apocalyptic number.

1265015262515 is a deficient number, since it is larger than the sum of its proper divisors (270117732685).

1265015262515 is an equidigital number, since it uses as much as digits as its factorization.

1265015262515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108046.

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 1265015262515 in words is "one trillion, two hundred sixty-five billion, fifteen million, two hundred sixty-two thousand, five hundred fifteen".