1265005167 has 16 divisors (see below), whose sum is σ = 1694582112. Its totient is φ = 839393280.

The previous prime is 1265005151. The next prime is 1265005169. The reversal of 1265005167 is 7615005621.

It is not a de Polignac number, because 1265005167 - 2⁴ = 1265005151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265005169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762603 + ... + 764259.

It is an arithmetic number, because the mean of its divisors is an integer number (105911382).

Almost surely, 2^1265005167 is an apocalyptic number.

1265005167 is a deficient number, since it is larger than the sum of its proper divisors (429576945).

1265005167 is a wasteful number, since it uses less digits than its factorization.

1265005167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 1265005167 is about 35566.9111253704. The cubic root of 1265005167 is about 1081.5105654137.

The spelling of 1265005167 in words is "one billion, two hundred sixty-five million, five thousand, one hundred sixty-seven".