1265875079 has 4 divisors (see below), whose sum is σ = 1446714384. Its totient is φ = 1085035776.

The previous prime is 1265875073. The next prime is 1265875103. The reversal of 1265875079 is 9705785621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1265875079 - 2¹⁶ = 1265809543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265875073) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 90419642 + ... + 90419655.

It is an arithmetic number, because the mean of its divisors is an integer number (361678596).

Almost surely, 2^1265875079 is an apocalyptic number.

1265875079 is a deficient number, since it is larger than the sum of its proper divisors (180839305).

1265875079 is an equidigital number, since it uses as much as digits as its factorization.

1265875079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180839304.

The product of its (nonzero) digits is 1058400, while the sum is 50.

The square root of 1265875079 is about 35579.1382554440. The cubic root of 1265875079 is about 1081.7584177458.

The spelling of 1265875079 in words is "one billion, two hundred sixty-five million, eight hundred seventy-five thousand, seventy-nine".