1265051512 has 8 divisors (see below), whose sum is σ = 2371971600. Its totient is φ = 632525752.

The previous prime is 1265051479. The next prime is 1265051527. The reversal of 1265051512 is 2151505621.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1265051512² = 3200710656026972288, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 79065712 + ... + 79065727.

It is an arithmetic number, because the mean of its divisors is an integer number (296496450).

Almost surely, 2^1265051512 is an apocalyptic number.

It is an amenable number.

1265051512 is a deficient number, since it is larger than the sum of its proper divisors (1106920088).

1265051512 is a wasteful number, since it uses less digits than its factorization.

1265051512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158131445 (or 158131441 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 1265051512 is about 35567.5626378868. The cubic root of 1265051512 is about 1081.5237727366.

The spelling of 1265051512 in words is "one billion, two hundred sixty-five million, fifty-one thousand, five hundred twelve".